Luftwaffe aluminum belt buckle by Steinhauer & Lück

Early aluminum LW belt buckle in good condition. Maker marked on the reverse by St. & L. (Steinhauer & Lück, Lüdenscheid). Comes with a leather tab, maker marked by Julius Maurer 1938 – it seems like the tab has been there for ever, so I can't explain what happend here exactly. Still a very nice belt buckle with leather tab!