Brownish bakelite canteen cup marked F7/S

Brownish bakelite cup which is in a good used condition with a lot of small surface scratches and a small chip. The cup is nicely marked with an MPD code which was typical for period produced bakelite items. The MPD code F7/S Indicates production by an unknown maker and that the used material is Phenolic resin (bakelite) with sawdust as the filler material. Nice brownish bakelite cup to complete a canteen or a display!