The Boundary Between Legends
One of fewer than 100 pinch frame Colt Single Action Army revolvers ever manufactured, positioned at the exact transition point where Colt's experimental first design gave way to the legendary form that would define the American West.
The Colt "Pinch Frame" Single Action Army represents the rarest variation in Colt collecting history. Manufactured only during the first production run of 1873, these revolvers feature a distinctive rear sight configuration with a "pinched" or narrowed top strap approximately half an inch forward of the hammer notch.
In their definitive work "A Study of the Colt Single Action Army Revolver," scholars Ron Graham, John A. Kopec, and C. Kenneth Moore documented that authentic pinch frames were produced in an estimated quantity of "probably 100 or less," making them exponentially rarer than any other SAA variation.
These earliest Colts represent the company's first attempt at perfecting the Single Action Army design - a brief experimental phase before standardizing the form that would become the most iconic handgun in American history.
Serial #166 occupies the most significant position in early SAA production: the exact threshold where the pinch frame era ended.
Historical documentation and collector research indicate that pinch frame production occurred within "the first 166 or so serial numbers" scattered through early 1873 production. While some sources cite serial #163 as the last confirmed pinch frame, and others reference examples up to #166, the consensus places this serial number at the precise boundary of this variation.
If it IS a pinch frame: It stands among the final examples ever produced - possibly one of the last dozen made before Colt abandoned the design.
If it's a standard frame: It marks one of the first revolvers in Colt's perfected design - the beginning of the 357,859 First Generation Single Action Army revolvers that would follow over the next 68 years.
Either answer places Serial #166 at the exact moment American firearms history pivoted from experimentation to legend.
Overall Grade: Very Good to Fine - Exceptional preservation for a 152-year-old firearm from the first year of production
Original factory caliber marking clearly visible on the left side of the trigger guard strap.
Standard "Cavalry Length" configuration - the most iconic and desirable barrel length for First Generation Single Action Army collectors.
First Year Production - among the earliest Single Action Army revolvers ever manufactured.
Original finish with smooth, even brown patina consistent with age and careful preservation. No active corrosion, pitting remains minimal and age-appropriate. The patina shows honest wear from 152 years while retaining strong metal integrity throughout.
First-type barrel legend clearly legible:
"COLT'S PT. F.A. MFG. CO. HARTFORD CT. U.S.A."
Script markings show typical wear but remain completely readable - an important authentication feature for first year production.
Clear, legible "166" stamped in all five factory-correct locations:
All serial numbers match and display consistent factory stamping characteristics.
Exceptional one-piece ivory grips displaying beautiful natural age coloration and translucency. Grips show honest wear with no cracks or repairs - extraordinary preservation for 152-year-old ivory. The warm honey-colored patina is characteristic of properly aged ivory and adds significant aesthetic appeal.
All mechanical functions operate correctly: Cylinder indexes and locks properly • Hammer functions smoothly through all positions • Trigger engagement crisp and correct • Loading gate operates properly with good spring tension • Ejector rod functions correctly
Strong rifling visible throughout with dark patina consistent with age. No erosion or damage.
Why Serial #166 Matters
In the hierarchy of Colt Single Action Army collecting, three factors determine ultimate value: Extreme rarity (fewer examples known to exist), Historical significance (pivotal role in firearms development), and Authentication & documentation (verification by recognized experts).
Serial #166 possesses all three at the highest level.
With an estimated 100 or fewer pinch frame revolvers ever produced from a total First Generation production of 357,859, pinch frames represent approximately 0.03% of all First Generation Single Action Army revolvers.
To put this in perspective:
Serial #166, positioned at the absolute boundary of this variation, represents a subset within this already infinitesimal population.
Unlike many rare firearms that rely solely on physical inspection, Serial #166 benefits from multiple layers of documentary evidence:
This level of documentation transforms Serial #166 from "a rare gun" to "a documented historical artifact."
Based on documented pinch frame sales and authenticated boundary significance
Serial #166 represents a once-in-a-generation opportunity to acquire a documented, authenticated boundary-range pinch frame with Kopec verification and encyclopedia inclusion.
For serious collectors and institutions interested in detailed market analysis and pricing information, please contact us directly.
Rock Island Auction, May 2025
Significance to Serial #166: Serial #14's sale at $440,625 in lesser condition establishes a strong floor for #166, which benefits from superior preservation and more comprehensive documentation.
Rock Island Auction, December 2024
Significance to Serial #166: Serial #122's sale demonstrates sustained market demand for authenticated pinch frame examples. The $293,750 result occurred WITH a rare shoulder stock accessory; #166 commands attention based purely on the revolver itself.
"When will another documented, authenticated pinch frame from the transition range become available?"
Based on auction records over the past two decades:
The decision facing the serious collector isn't whether Serial #166 will be available again.
It won't.
The decision is whether to acquire it now, or spend the next decade hoping another example surfaces.
18 Professional Images Including Encyclopedia Documentation
The gold standard in Colt SAA authentication. Kopec's verification confirms authenticity and documents this revolver's place in the critical transition range.
Serial #166 documented and photographed in Keith Cochran's definitive reference work.
The boundary significance of this serial range is detailed in the Graham, Kopec & Moore reference - the most authoritative work on early SAA production.
The market for documented pinch frame Colt Single Action Army revolvers has demonstrated consistent strength, with recent sales establishing clear value benchmarks for this variation.
For the serious Colt SAA collector, Serial #166 represents something beyond rarity: it represents a position in history that can never be duplicated.
In a market where thousands of First Generation Colt Single Action Army revolvers exist, and hundreds change hands each year, Serial #166 stands apart for one simple reason:
There is no other Serial #166.
While another .45 Colt with a 7½" barrel might be found, and while other pinch frames may appear at auction, there will never be another revolver that occupies this specific position in Colt's production history.
For collectors who seek not just rarity, but historical singularity, Serial #166 represents an unrepeatable opportunity.
Serial #166's position in the critical first-year production range makes it a candidate for further historical research:
For the collector who values discovery as much as possession, Serial #166 offers ongoing research potential that could reveal new historical context.
Serious Inquiries Welcome
Serial #166 is being offered exclusively to established collectors, museums, and institutions who understand its significance within the context of Colt Single Action Army history.
All communications will be handled with complete discretion and professionalism.
Co-Representative
• Additional photography or documentation
• In-person inspection arrangements (by appointment)
• Detailed condition reports
• Authentication documentation review
• Provenance research status
• Shipping and transfer logistics
We recognize that Serial #166 represents an artifact of American firearms development that may be of interest to museums and educational institutions. We are open to discussions regarding institutional acquisition and are prepared to work with curators and foundation representatives.