BirdForum is the net's largest birding community dedicated to wild birds and birding, and is absolutely FREE!

Register for an account to take part in lively discussions in the forum, post your pictures in the gallery and more.

Reply to thread

Message: <blockquote data-quote="Renze de Vries" data-source="post: 1452515" data-attributes="member: 10024">sammyboy,Zeiss serial numbers are continuous. I think there can differences between models as I expect serial numbers were assigned to batches of production, but these differences should be small and of no great consequence. Also, the year of production is necessarily different from the year the binoculars were issued but I expect these to be no more than about a year.BTW, the earliest serial number I have for a long type 8x30 Dialyt is 649892, the last long type record I have is 798863. The earliest serial number I have for a short type 8x30 Dialyt is 888993.Unfortunately there's quite a gap in my chart between the two types' serial numbers so I have to guess where the transition should be located: round about 860000 I'd say.Renze</blockquote>