1974 Forrest Mountaineering “Nut Hammer”. This bare metal version was available first and later a black corrosion treatment, similar to the other Mjollnir hammers, became available. The pick is fixed and the handle is epoxied into the head. The head weight is slightly less than the standard Forrest wall hammer design.
Nut hammers were meant for use setting or cleaning nuts, testing fixed pitons, and driving the occasional pin but were meant for lighter duty than a typical wall hammer.