I have seen an NL 8x42 whose serial number was A90xxxxx, so still the old rule of adding 30. Any idea why the new SN style that you mentioned was not used in this case? Maybe because the binos were produced prior to the introduction of the new rule on Sept 1st?
Thanks, Jan, very useful info. I can understand why they decided to not use digits 3 and 4 for the week (they need those two digits for the serial number itself), but I am not sure why they have changed the rule for the year of production. In particular why not indicate the year directly, such...