A 1920 Award Document For The Prussian Pilot's Commemorative Badge To Erich Sperling Auction making this a signature M35

making this a signature M35 type helmet

both buttons maker marked "BRANKO RADONIC

A 1940 SS EM/NCO'S Buckle by Overhoff & Cie - "RZM 36/40 SS - Aluminum construction buckle (injection molded)

again flying Wapitis

as per this example

A 1920 Award Document For The Prussian Pilot's Commemorative Badge To Erich Sperling Auction making this a signature M35A transcript of a certificate, measuring 210x147mm, extremely fine condition with folding crease and minor tear. Its an award certificate for a Flyers Commemorative Badge, issued to Officers deputy Erich Sperling of the Fliegerhorst (airbase) Dberitz. The original document was dated to March 31, 1920. The transcript is dated to Brunswick on April 26, 1935. It is signed in grey crayon by a government inspector named Pranne or similar.