Felt like I needed something today to match the perfect blue sky – cloudless, no contrails, beautiful. I have just one watch with a sky blue dial, and that is Citizen’s 67-9631 automatic chronograph, featuring the single (minute counter) sub-register of the 8100 movement.
The 8100A models had a much shorter production run than the 8110A, possibly little more than a couple of years, and the 67-9631 is one of the rarer ones too. I’ve not come across a domestic market catalogue that features this one, but I have seen a German advert, from 1974, which included this model – it may be that this one was only sold in the export market. The dial on these can fade quite badly, and when I bought mine it was hard to tell how bad it might be. That was down to a badly scratched glass, so when I replaced it I was very pleased to see a nice dial. It is also on a solid link bracelet, original to this model. This one is from April 1974:
This one is running nicely and keeping good time. More info here: https://sweep-hand.org/2014/11/11/this-weeks-featured-watch-63-the-67-9631-chronograph/
Sweephand's Vintage Citizen Watch Blog 
I have one with a almost perfect dial. Do you know if fakes have been made?
Hi Kent, thanks for visiting. I don’t believe there are aftermarket/fake versions of this dial. Is there anything about it that gives you concern? Stephen
Hi again!
Long time between my comments, since I`m on vacation I have time to dig deep into my collection. And found my old 67-9631. No really concerns, just the very good condition. One moore question though, the crown is not signed but looks very much like the original one. Are there examples of ”unsigned” original crowns? Maybe a original sparepart?
Anyway, thank you for an educational blog!
Regards Kent