Does it exist?

[springer]

Originally Posted by pdoukas

So it would be safe to say that if I found what I was looking for, red sub meters first mkI dial, with serial in range of 1968 according to serial number charts then it's possible that the watch may indeed be a little bit older. I can live with that if I feel comfortable saying it was my birth year watch. My only concern is the case back where the earliest I have seen is I69.

I think it would be safe but, it might be tough finding a '68 Submariner 1680 based on the serial number data base.