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Message: <blockquote data-quote="sammyboy" data-source="post: 1504463" data-attributes="member: 40715">I think the first two numbers of the serial no. are the year of manufacture, I've got a very similar pair of 12x40s which I think are from 1977, will get some pics up later.Again, a very nice, sharp view and little of that yellow tinge to the colour but not overpowering, the only problem is they seem to my eyes to be a tiny bit out of collimation? The images do line up but there is a slight delay as my eyes compensate for a slight misalignment, and again when I finish viewing but whilst using the bins there's no strain, the view is then quite relaxed. Would that be the bins or my eyes?From what I've read these former-USSR binoculars had rather hit and miss build quality but rarely go out of alignment, so wonder if these have been mis-collimated at the factory and are still out now? Any way to align them or am I best living with the slight collimation issue?</blockquote>