K:= Marked with a 'K' for kriegsmarine or kaiser marine? G:= Gummi, rubber protected (only in uboat binos) R:= Rice covering (leather stand by, mixed w black paint to give a rough texture) L:= Leather covering (or Vulkanite, a leahter-like early form of synthetc plastic) Y:= Sand Yellow (known as Afrika Korps binos) List will be updated here every week or sooner I am trying is to form batches of binoculars #'s and cross information with pieces with known provenance, also if you have provenance with your binoculars, please comment, dates, formation, past owner (veteran) info,where captured etc etc. Only will be accepted models with the word dienstglas stamped and number, could be maker marked or code marked, only WWII Please send me by Private mail all data on your Dienstglas 6x30, 7x50 and 10x50 model binoculars, plus serial number and maker, I am attempting to create a database Well, now it is a very long range project,