Yes, I had got the idea they were not common. Although, as soon as I purchased this one, two more popped up on e-bay, one of which also looked as if it had never been painted, and it was dated 1918. Would you know if ~Angel's~ periscope has a broad arrow on it? I have seen pics of six or seven of these and haven't seen one with the stamp on it yet.

When you get around to the telescopes for the MKLicon, I've got the pam "Section 33, The Straight Telescope". Gives full stripping & reassembly and care instructions for the Scout Regiment Telescope from I believe the late seventies here in Aus.

Cheers,
Son.