Hi Surveyor,
I am sure you know your binoculars, but, the pair on the extreme left in your photo look very much like the Zeiss 8x20 IF ones from the mid '60's. I have had several pairs, and on at least two of them, as the Zeiss name was merely painted on the smooth panel on the bridge, it had rubbed completely off through use. If they are Zeiss, you may be able to examine that area carefully for any trace of the name!
Regards, John
I am sure you know your binoculars, but, the pair on the extreme left in your photo look very much like the Zeiss 8x20 IF ones from the mid '60's. I have had several pairs, and on at least two of them, as the Zeiss name was merely painted on the smooth panel on the bridge, it had rubbed completely off through use. If they are Zeiss, you may be able to examine that area carefully for any trace of the name!
Regards, John