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 · 034

E. Mayer single-shot smoothbore pistol

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. 24 ↗

E. Mayer single shot handgun, no S/N, cal. .38-55, smoothbore, barrel length 14-1/2".

What this entry requires

  • ATF REQUIRESYour firearm has no serial number, as the ATF wording statesATF: “no S/N”
  • INFOATF states no date; production was about 1870–1940.

Editorial facts · Our research

Low editorial confidence. Some details below couldn’t be confirmed from independent sources. The ATF wording is unaffected. About confidence

Country
United StatesBasis: no citation
Manufacturer
E. MayerBasis: the ATF wording
Type
PistolBasis: the ATF wording
Action
OtherBasis: no citation
Caliber
.38-55Basis: the ATF wording
Made
c. 1870–1940production; ATF states no dateBasis: no citation
Service
Commercial

Source

Official wording
ATF P 5300.11, April 2025 edition · Section III · PDF p. 24 ↗ · ATF original ↗
Entries
1 line
Verbatim check
Checked against the PDF text before every release
Editorial facts
Confidence: Low · Last revised 18 October 2026 (Evidence pass) · How we rate confidence
References
None attached yet
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
None

Historical context

NO VERIFIED IMAGE AVAILABLEWe show only freely licensed images verified to depict this model. None has been found yet.