SA belt buckle (SA Koppelschloß) The SA pattern box buckle was the first belt buckle to be introduced by the NSDAP, with its estimated introductory dates ranging between 1921 and 1923. On its introduction it was not fully standardized and came in at least five variations. The SA pattern buckle was originally worn by other Nazi organizations including the SS, the NSKK, the NSBO, and political leaders. The SA box buckle was officially replaced by the rectangular, open frame, dual claw buckle in April of 1934, and was to be discontinued in 1936, although it was still widely worn. Slightly convex, stamped brass, two-piece construction buckle features, to its obverse, a plain field upon which is an embossed, political-style national eagle clutching the laurel surround to a canted swastika on a slightly domed, plain field. The eagle’s head falls on the outside of a ribbed border with simulated twisted rope trim to its inner and outer edges. To the reverse is its raised buckle catch, and a prong bar with dual prongs, for the belt’s retaining tongue. Unmarked.Recommended variant for SA buckle collections