Two experimental K-43 magazines both unmarked. First, probably unique, 10 shot specimen has a simplified front mounting hook and front body pressing. The other is a 20 shot extended magazine. 10 rd magazine has a simple folded/stamped sheet metal retention hook spot welded on the plain forward edge, instead of having the usual hook formed into the front body, and only partial bluing to the lower half, the upper part of the body being originally unfinished; 20 rd magazine has a much wider sheet metal reinforcement plate at the forward edge with a stamped hook and the body is formed with experimental tooling as a single, longer than standard pressing. These very rare 20 shot magazines are also known with the maker’s mark “slj” (as seen on some 2nd Pattern FG42 magazines but absent here). As experimental items these both correctly show no WaA acceptance markings or date. SIZE: PROVENANCE: Collection of Dr. Geoffrey Sturgess. CONDITION: 10 rd magazine retains fine original blued finish, on the lower 3rd with some scattered light pitting on the upper part, left in-the-white during manufacture, which now shows even gray patina, spring is strong and it appears fully serviceable. 20 rd mag retains over 95% of its smooth lustrous finish, spring is strong and it appears fully serviceable. 43475-1119 JWK67 (5,000-6,000)