With Citizen you have to extract two numbers for the month. They don't use O, N, D, for the last three months. They use just numbers. So first number is the year and two following are the number of the month.From what I have read it's either 76 or 86 as the serial number system is basically the same as the Seiko system. The first two numbers of the serial are Year and then Month. So 6th year and 10th month aka October. You just need to know the decade that style of watch was made during.
Hope that is of some help to you.
Yeah, too many projects here too!Others have answered your question, but that is a beautiful example! I've got an 8100 that's in pretty sad shape. The dial has some pretty deep scratches and it's just waiting in my watch box for some TLC. I may have undertaken more projects than I can realistically complete! :grin: