Colt Automatic Pistol and Revolver Information - 25 years of Service to Colt Firearms Collectors


Colt Model 1908 Vest Pocket Hammerless .25 ACP - Factory Magazine Variations

Colt 1908 Vest Pocket .25 ACP magazines have 6 viewing holes

Type Top Finish Base Year (approx.)
I Rounded full blue unmarked pinned base 1908-1912
sn 1 forward
II Rounded two-tone unmarked pinned base 1912-1915
sn 105000 forward
III Rounded two-tone marked pinned base 1915-1920
sn 121000 forward
IV Rounded two-tone marked crimped base 1920-1922
sn 230000 forward
V Straight
(Top made straight to function with the magazine safety disconnector)
two-tone marked crimped base 1922-1939
sn 306000 forward
VI Straight full blue marked crimped base 1939 to end
sn 407000 to 409XXX,
1946 - 1948
sn 420001 to end of post-war production at 420705

By rounded and straight top, when viewing the side profile of the magazine, these shapes are apparent. The straight top with notch was used to better engage the magazine safety disconnector (Tansley Device) that was introduced at approx. sn 141000.

Gun of the Month

January 2022

Contact Us


Home | Wants | Gun of the Month | Historical Info | Instruction Sheets
Site Search| Online Bookstore | Colt Care | Links

Questions / Comments? Contact Us!

The Rampant Horse and Colt logos are registered
trademarks of Colt's Manufacturing Company, Inc. Hartford, CT

Copyright 1996 - 2024 by All rights reserved.
Please read our online Privacy Statement
The logos and all proprietary artwork and photos are the property of and may not be reproduced or distributed without expressed written permission.