Early Luftwaffe buckle by R. Sieper & Söhne 1936 unit marked

Nice and worn early Luftwaffe belt buckle executed in aluminum. Still shows the first pattern 'droop tail' eagle on the front. The buckle is complete with leather tab, that shows the maker mark of the firm Richard Sieper & Söhne, Lüdenscheid (R.S.&.S) and the manufacturing date 1936. The buckle itself is tripple marked on the reverse with the factory logo of Richard Sieper. The reverse of the leather tab shows two unit marks: Fea.17 and 4.Fea.Q. A very nice early and untouched LW belt buckle!