Black bakelite canteen cup marked 4M/S

Black bakelite cup which is in a good used condition with some small surface scratches. The cup is nicely marked with an MPD code which was typical for period produced bakelite items. The MPD code 4M/S Indicates production by Kronacher Porzellanfabrik Stockhardt und Schmidt-Eckert, Kronach and that the used material is Phenolic resin (bakelite) with sawdust as the filler material. Excellent black bakelite cup to complete a canteen or a display!