Finally a machined jack cup that stays put and which can be easily removed if needed; and most importantly, it looks correct. Machined from billet aluminum; your choice of chrome or nickel plating, supplied with polished stainless mounting screws and threaded to fit the “switchcraft” input jack.
With a slightly rounder head than the 50-51, this button is the correct choice for 1952 through the 1960's. Made from the same CRS alloy as the originals, including nickel plated. Set of 2 each.