Source: ATF P 5300.11 · Curios or Relics List · Jan 1972 – Apr 20253,573 entries · 4 sections
The C&R RegisterA finding aid to the ATF Curios or Relics List, for Type 03 collectors
C&R · II · 152

Colt Missouri Sesquicentennial Single Action Army

Section II: curio or relic, still subject to the Gun Control Act

Official wording

ATF P 5300.11 · APRIL 2025 EDITION · SECTION II · VERBATIM · PDF P. 6 ↗

Colt, Missouri Sesquicentennial single action army, cal. .45.

ATF lists cal. .45; this is the .45 Colt cartridge.

What this entry requires

  • ATF REQUIRESYour firearm is this edition: “Missouri Sesquicentennial single action army”
  • INFOATF states no date; production was about 1970.

Editorial facts · Our research

Country
United States
Manufacturer
Colt's Firearms
Type
Pistol¹
Action
Other
Caliber
.45 Colt
Made
c. 1970production; ATF states no date²³
Service
Commercial
Search listings ↗Check a specific gunReport an error ↗

Source

Official wording
ATF P 5300.11, April 2025 edition · Section II · PDF p. 6 ↗ · ATF original ↗
Entries
1 line
Verbatim check
Checked against the PDF text before every release
Editorial facts
Confidence: Medium · Last revised 18 October 2026 (Evidence pass) · How we rate confidence
References
  1. collectorsfirearms.com ↗, type: Colt Single Action Army Missouri Sesquicentennial .45 LC caliber revolver
  2. collectorsfirearms.com ↗, years: Missouri Sesquicentennial SAA, 1970 issue
  3. ctfirearmsauction.com ↗, years: auction lot: SAA Missouri Sesquicentennial .45 Colt, manufactured in 1970, barrel "1820- MISSOURI SESQUICENTENNIAL-1970"
Fact tags
  • ATF the ATF wording states it.
  • REF ¹ an outside reference supports it; the number points to the list of references.
  • ESTIMATE an approximate or indirect reading, for example the production range of the base model.
  • NO CITATION we haven’t attached a reference for this fact; it’s our editorial reading, not ATF’s.
Source checked
20 October 2026: ATF’s page still lists the April 2025 edition
Corrections
1 change · see below

Correction history

  1. Evidence passYears: 1971–1972 → 1970. Dealer and auction records give 1970, not 1971–1972

All corrections · How corrections work

Historical context

Colt Single Action Army (base model shown for Colt Missouri Sesquicentennial Single Action Army)
Shown: a standard second-generation Colt Single Action Army, not the Missouri Sesquicentennial edition.

Image: Wikimedia Commons, “1956prime2.jpg” by Mike Cumpston, Public domain. Retrieved October 2026.

Summary: Wikipedia, “Colt Single Action Army”. Text CC BY-SA 4.0.

FROM WIKIPEDIA

The Colt Single Action Army is a single-action revolver. It was designed for the U.S. government service revolver trials of 1872 by Colt's Patent Firearms Manufacturing Company and was adopted as the standard-issued revolver of the U.S. Army from 1873 to 1892.