Vintage Hammer Brand Switchblade Automatic Knife

HAMMER BRAND IMPERIAL PROV. RI USA 1945-55 VINTAGE AMERICAN AUTOMATIC – Latham's Vintage Sales

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Switchblades

1930-40's Auto Arizona Custom Knives

Rostfrei Vintage Automatic Stiletto Flick Knife

Imperial candy stripe with broken spring - Knife Forums

Antique Auto Arizona Custom Knives

Kraft Auction Service Auction Catalog - 45th Anniversary Auction - Knife and Police Badge Online Auctions