Zeiss Deltrintam 8x30 (1 Viewer)

Is it possible to find out anything about an old-ish pair of 8x30 Deltrintam bins from the serial number? I have acquired a pair which I believe are quite old, but in good condition - focus wheel a bit stiff perhaps, but no obvious marks, sharp bright image etc. The serial number is DX03554.

Any thoughts gratefully received,

Paul

Hi Paul,

You may glean some info from these links, if you haven't looked at them already
http://home.europa.com/~telscope/zeissbn2.txt
http://www.europa.com/~telscope/binoc_list.txt
http://home.europa.com/~telscope/listp200.txt

Andy.

Andrew,

I can't help with serial numbers, but the most important change to the optics of the Deltrintem occured in the (mid?) 80's when the coatings changed from single layer to multi-coating. If the reflections from the glass in your bins are bluish-purple they are single layer. If they have an orange-magenta cast they are multi-coated. Of course, if they are really old (pre WWII) they probably don't have any coating at all, and the reflections won't have any strong color cast.

Henry