Proof & Acceptance marks on Colt pistols
 

"Guy H. Drewry"

Ordnance Department
"Crossed Cannon"

"P" proof mark

G.H.D.
Left side of frame below slide stop

 

Final Inspection Mark
1942 - 1945

P
1. Top of slide,
2. left side of receiver,
3. left barrel lug

 

        
See a detailed - VP (inside triangle) Colt's Verified Proof