This is the case back from my 6105-8000 dated January 1969 have you got any later than that ? thanks
Sorry i mean a 7 digit serial number instead of the newer 6 digit # they were last used in the late 60s i believe.docrwm said:Ah, you mean the oldest. I was going to post a newer model that went into production 2009 and I have seen a 0 dated caseback for this year (no pic sorry).
I have seen this on Yeoman's weblog - SKZ283 model "Starfish"
I think from what i can make out the only thing you can be 100% sure about with Seiko is that you can not be 100% sure !!water70proof said:I'm a little suspicious of that 6105 caseback. From what I've seen, everything coming out of Suwa after mid 1968 was six-digit . I've seen several 7-digit serials on 8000/09s to that period (and there have been a few posted here in the past and one on the database). I wonder if that caseback is a service part, but I'm not sure how that would explain the serial number. There were certainly watches that date before the one you've pictured, made at Suwa, that have six-digit numbers. A puzzle.....