Hi all. I picked these binoculars up a while back. They came in a British 1916 dated leather case and from what I have read I believe the presence of the large adjustment knob indicates military issue. I have not been able to find anything out about the markings however. It reads: R 49 1 MG 10. If anyone has seen similar or can suggest if they are unit markings or something else, it would be greatly appreciated. Cheers.

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