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Model 1903/08 Hammerless Instruction Sheet PDF (1.3MB)
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Colt Model M Unique Serial Numbers

Colt Model M .380 ACP Serial Number 1
Lowell Pauli Collection, photos by Sam Lisker
Colt Model M .380 ACP Serial Number 1 - shipped to J.R. Hegeman in 1908.   Mr. Hegeman, a vice president of the Metropolitan Life Insurance Company, of New York, was very active between 1885 and 1925, and was interested in Colt arms only. Hegeman was truly a pioneer in Colt collecting and presumably had some fantastic connections within the Colt company in order for him to own many production prototype and serial number one guns.

Colt Model M .380 ACP Serial Number 1
Close-up of left rear slide and frame.

Colt Model M .380 ACP Serial Number 1
 

Colt Model M .380 ACP Serial Number 1
 
Colt Model M .380 ACP Serial Number 1

Close-up of serial number 1.  Compare it to the close-up photo of serial number 15 below.  It's slightly different.

Colt Model M .380 ACP Serial Number 15
John W. Brunner Collection, photos by Sam Lisker
For comparison, here's a close-up of Model M .380 serial number 15.

Colt Model M .380 ACP Serial Number 1

Colt Model M .380 ACP Serial Number 1

Colt Model M .380 ACP Serial Number 1
 

Colt Model M .380 ACP Serial Number 1

 

Model M .32 Serial Number 6

Colt Model M .32 ACP Serial Number 6 - shipped to Frank Schirmer in 1903.  Schirmer was Colt's Treasurer at the time and also received Colt Model N .25 ACP Serial Number 2.
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