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 · III · 021

Colt New Service smoothbore, S/N 326596

Section III: removed from the NFA, curio or relic under the GCA

Official wording

ATF P 5300.11 · APRIL 2025 EDITION · SECTION III · VERBATIM · PDF P. 23 ↗

Colt, Model New Service, revolver, cal. 44/40, S/N 326596, w/original smooth bore barrel.

What this entry requires

  • ATF REQUIRESOriginal as the ATF wording requires: “w/original smooth bore barrel”
  • ATF REQUIRESYour serial number is one ATF listsATF: “S/N 326596”
  • INFOATF states no date; production was about 1898–1941.

Editorial facts · Our research

Country
United States
Manufacturer
Colt's Patent Fire Arms Mfg. Co.
Type
Pistol
Action
Other
Caliber
.44-40 WCF
Made
S/N 326596 only · c. 1898–1941production; ATF states no date¹
Service
Commercial
Search listings ↗Check a specific gunReport an error ↗

Source

Official wording
ATF P 5300.11, April 2025 edition · Section III · PDF p. 23 ↗ · ATF original ↗
Entries
1 line
Verbatim check
Checked against the PDF text before every release
Editorial facts
Confidence: Medium · Last revised 17 October 2026 (Data-trust review) · How we rate confidence
References
  1. Wikipedia, “Colt New Service” ↗, years: made by Colt from 1898 until 1941
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
2 changes · see below

Correction history

  1. Data-trust reviewEditorial confidence: Low → Medium. Re-rated after supporting references were added or re-checked.
  2. Data-trust reviewYears: 1898–1944 → 1898–1941. Wikipedia: New Service made 1898 until 1941

All corrections · How corrections work

Historical context

Colt New Service (base model shown for Colt New Service smoothbore, S/N 326596)
Shown: a Colt New Service Shooting Master, not this smooth-bore revolver.

Image: Wikimedia Commons, “Colt Shooting Master.jpg” by Hmaag, CC BY-SA 3.0. Retrieved October 2026.

Summary: Wikipedia, “Colt New Service”. Text CC BY-SA 4.0.

FROM WIKIPEDIA

The Colt New Service is a large frame, large caliber, double-action revolver made by Colt from 1898 until 1941. Made in various calibers, the .45 Colt version with a 5+1⁄2-inch (140 mm) barrel was adopted by the U.S. Armed Forces as the Model 1909.