Colt Single Action Army: Generations, Variants, and Letter Values

The Colt Single Action Army — the "Peacemaker" or "Colt .45" of Western legend — is arguably the most iconic American handgun ever produced. Introduced in 1873 and produced in three distinct generations spanning over 150 years (with production continuing today at a reduced scale), the SAA occupies a position in American collecting that combines mechanical history, cultural association, and market depth in ways matched by few other firearms. For collectors, the Single Action Army offers clear generational demarcations, well-documented production records, and a robust factory letter service that authenticates individual revolvers to specific original configurations — features that together make SAA collecting unusually rewarding for those who invest in understanding the framework.

The three-generation structure is the foundational organizing principle. First Generation (1873-1940) represents the original production run, spanning the Indian Wars, the closing of the American frontier, both World Wars' early years, and everything in between. Second Generation (1956-1974) represents the post-war reintroduction. Third Generation (1976-present) represents continuing modern production. Each generation has its own collector dynamics, pricing ranges, and variant considerations, with First Generation production commanding the dominant collector interest and Third Generation production supporting primarily a shooter market with limited premium variants.

First Generation (1873-1940)

First Generation Single Action Army production spans the original introduction through Colt's World War II-era production halt. Across that period, approximately 357,000 First Generation SAAs were produced in dozens of chamberings, multiple barrel lengths, and various grades from standard military and civilian configurations through factory-engraved high-grade examples.

Production Periods Within First Generation

Collectors generally recognize several sub-periods within First Generation production. Black powder frame production (roughly 1873 through the early 1890s) used frames designed for black powder cartridges and shows specific features distinguishing black powder era production. Smokeless powder frames (from the mid-1890s onward) incorporated design updates supporting smokeless cartridges and show different mechanical features. Pre-war production (1900-1940) includes the bulk of First Generation production and encompasses the Colt SAA's peak civilian popularity.

Within First Generation, earliest production carries specific premium considerations. Very early 1873 production — particularly military-contract Cavalry and Artillery Model variants — commands substantial collector interest based on both historical association and relative scarcity. Late First Generation production before the 1940 halt is similarly positioned as a distinct collecting category.

Standard Chamberings

The .45 Colt chambering is the original and iconic caliber, representing a substantial portion of First Generation production. Other common First Generation chamberings include .44-40 Winchester (popular among collectors who appreciated the ability to share ammunition with the Winchester Model 1873 rifle), .38-40 Winchester, .32-20 Winchester, .38 Colt, and various smaller-production chamberings. Specific rare chamberings command premiums based on their production quantities and collector interest.

Barrel Lengths

First Generation SAAs were produced in multiple barrel lengths: the 7.5-inch Cavalry Model, the 5.5-inch Artillery Model, the 4.75-inch "Civilian" or "Gunfighter" Model, and various other lengths including short barrels (3.5-inch, "Storekeeper" models) and long barrels (Buntline variants with barrels up to 16 inches and beyond). Each barrel length has its own collector interpretation, with certain short and long variants commanding premiums based on limited production and historical association.

Second Generation (1956-1974)

Colt halted SAA production in 1940 as manufacturing focus shifted toward wartime production. Post-war, civilian demand for Single Action Army revolvers eventually drove Colt to reintroduce the model in 1956 — the start of Second Generation production.

Serial Number Identification

Second Generation serial numbers begin at 0001SA and run through approximately 73,000SA. The "SA" suffix identifies Second Generation production and distinguishes it from First Generation (no suffix) and Third Generation (different suffix conventions). Reading the serial number suffix immediately identifies the generation and supports verification of generational claims.

Configuration and Availability

Second Generation SAAs were offered in multiple configurations generally paralleling First Generation options, including .45 Colt, .38 Special, and .44 Special chamberings, and in multiple barrel lengths. Second Generation production supported the growing postwar interest in Single Action Army revolvers from both collectors and the developing cowboy action shooting community.

Collector Position

Second Generation SAAs occupy a middle position in Colt collecting — substantially more valuable than Third Generation shooter-grade examples but well below First Generation collector values. A Second Generation SAA in excellent original condition with original box and paperwork typically prices in a range accessible to serious collectors without requiring the capital commitment that First Generation acquisition involves.

Third Generation (1976-Present)

Colt resumed Single Action Army production in 1976 — the start of Third Generation production that continues today at varying production levels.

Serial Number Identification

Third Generation serial numbers initially used the "SA" prefix format (SA00001 through SA99999) before transitioning to other formats over subsequent decades. The serial number format distinguishes Third Generation production from the Second Generation SA-suffix format.

Configuration Evolution

Third Generation production has included multiple special runs, commemorative editions, and premium configurations beyond standard production. Factory-engraved high-grade variants, specific commemorative editions tied to historical events or personalities, and specific limited runs all add collector interest to specific Third Generation examples.

Collector Position

Third Generation SAAs in standard configuration function primarily as shooter-grade revolvers supporting cowboy action shooting and general recreational use. Premium Third Generation variants — specific commemoratives, high-grade engraved examples, specific rare configurations — command collector premiums based on their distinguishing characteristics. The bulk of Third Generation production trades as utility revolvers rather than as collector items.

The Colt Factory Letter

One of the most important tools in SAA collecting is the Colt factory letter — a documented archival record identifying the original configuration, original shipping date, and original recipient of any serial-numbered Colt Single Action Army.

What the Letter Provides

Factory letters document the revolver's configuration as it left the Colt factory — original caliber, original barrel length, original finish, original grip specifications, and in some cases original engraving or other distinguishing features. The letter also records the date the revolver was shipped from Colt and the original recipient (typically a dealer or distributor, occasionally the original retail purchaser for direct shipments).

Letter Importance

For collectors, the factory letter serves several essential functions. Authentication — confirming that a revolver's current configuration matches its original factory configuration — supports premium valuations for unaltered original examples. Variant verification — confirming specific rare chamberings, barrel lengths, or configurations — authenticates premium variant claims. Provenance development — establishing the initial distribution channel — supports research into subsequent ownership history for historically significant examples.

Obtaining Factory Letters

Factory letters are available from Colt's Historical Department for a fee (currently around $300 per letter). The letter investment is modest relative to the valuation impact for premium examples. For any First Generation SAA being evaluated for acquisition at significant price points, factory letter documentation is typically worth the investment for both authentication and future resale support.

Letter Value Preservation

Factory letters accompany the revolver through subsequent transfers and ownership changes. Preserving the original letter with the revolver supports continuing value and authenticates claims for subsequent owners. Lost or unavailable factory letters can be reordered for most serial numbers, but preserving original letters with the revolvers they document is standard practice. The inventory system should record factory letter information alongside other acquisition documentation.

Valuation Dynamics

Condition Premium

Condition drives SAA valuation substantially, particularly for First Generation revolvers. Mint or excellent original-finish examples command dramatic premiums over revolvers with substantial wear, refinishing, or finish loss. The premium for original finish on First Generation SAAs can be several multiples of the pricing for equivalent revolvers with refinishing.

Originality Premium

SAAs remaining in original factory configuration (original barrel, original grips, original chambering) command premiums over revolvers modified during their service lives. Common modifications — re-barreling to different lengths, caliber conversions, replacement grip panels — reduce collector values even when the modifications were professionally executed. For maximum collector value, unaltered original configuration is essential.

Engraving and High-Grade Premium

Factory-engraved Single Action Army revolvers command substantial premiums over standard production. Colt's engraving grades range from modest coverage through extensive coverage with gold inlay and premium specification features. Authentication of factory engraving through factory letters is essential given the premium magnitude; aftermarket engraving (added after original production) doesn't command the same premium as factory-executed engraving.

Historical Provenance Premium

SAAs with documented historical association — attribution to specific known individuals, documented service histories, specific recorded events — command premiums reflecting their documented significance. Examples associated with famous Western figures, specific documented lawmen or outlaws, or specific historically significant events can command values far beyond what the basic configuration would otherwise support.

Collecting Approach

Develop Identification Knowledge

Before substantial SAA acquisition, develop the identification knowledge supporting accurate assessment. Read standard references — Kopec, Graham, and Moore's A Study of the Colt Single Action Army Revolver provides the baseline framework. Additional specialized references cover specific production periods and specific variants.

Verify Through Factory Letters

For any significant First Generation acquisition, obtain the factory letter before finalizing the transaction. The letter verifies that the current configuration matches the factory's original records and supports premium valuations for unaltered original examples. Items with unavailable factory records (due to fire damage to Colt's records in specific production ranges) warrant additional specialist authentication before premium-level acquisition.

Understand Generation Positioning

Price any SAA based on its specific generation and its specific characteristics within that generation. Don't pay First Generation prices for Second Generation or Third Generation production; don't misprice Second Generation examples at Third Generation shooter levels. The serial number suffix alone identifies the generation and places pricing expectations appropriately.

Document Thoroughly

For any Single Action Army in a collection, maintain comprehensive documentation including factory letter, photographs of all identifying features, serial number locations, condition details, and acquisition history. Preservation of this documentation supports continuing value, insurance coverage, and eventual disposition planning across the revolver's time in the collection.