Army (Heer) aluminum belt buckle by Richard Sieper & Söhne 1936 unit marked

Perfect and good looking army belt buckle that remains in light worn condition. Olive green coating on the aluminum shows normal wear. The buckle is maker marked on the reverse with R.S.& S. and matches the maker on the leather tab Richard Sieper & Söhne, dated 1936. On top of that is is unit marked toInfantry Regiment 21, part of the 17th Infantry Division.