Good condition. Marked Hammer Brand USA. Has spring action with button release and a safety lock.
HAMMER BRAND IMPERIAL CUT 1945-55 VINTAGE AMERICAN AUTOMATIC KNIFE 3 1 – Latham's Vintage Sales
Vintage Hammer Brand Automatic Blade Pocket Knife
I'm a knife collector with a limited budget but I found this Boker tree brand folder that I wanted some input on : r/knives
VINTAGE HAMMER BRAND USA 2 BLADE FOLDING POCKET KNIFE R17818
Vintage Hammer Brand USA Switchblade Pocket Knife for Parts/
HAMMER BRAND POCKET KNIFE MADE BY IMPERIAL
Vintage Hammer Brand Switchblade Folding Knife
Full Set of 4 Imperial or Hammer Brand Toothpick Pocket Knives w/Foil Covers & Outdoor Scenes 45-56
Vintage Hammer Brand 2 Blade Folding Pocket Knife Pat 2170537/2281782
Vintage HAMMER BRAND Pocket Knife 1 Single Blade (as-is)
HAMMER BRAND IMPERIAL CUT 1945-55 VINTAGE AMERICAN AUTOMATIC KNIFE 3 1 – Latham's Vintage Sales
Vintage Hammer Brand Switchblade Automatic Knife
40s-50s Vintage Hammer Brand Imperial USA 2 Blade Pocket Knife CA3