matthewking
297
Good questions
May 10, 2015,06:50 AM
The 6217-7000 was released during the calendar year of 1964. The 6217-7010 began release in 1965. As mentioned in my first post, there are slight differences between these two models (something I forgot to mention was that the -7000 is a pop caseback whereas the 7010 is a screwback).
Somewhat relatedly, but in a different family line, the "62MAS" Diver series ref 6217-8000 was launched in 1965 (although production seems to have ramped up significantly in '66) .
Back to the World Time --- the 6217-7010 was phased out in 1968 and replaced with the 6117 series that same year, which includes references 6117-6010, 6117-6400, 6117-6409, 6117-8000. These all have 6217-7000 "DNA" but as you will see, can very significantly from the original design.
I don't have knowledge of production numbers. I wish I did. I will try to find out what I can on this, especially for the 6217-7000.
These early World Timers are great. Love them. I'm wondering if Seiko will release something special for the 2020 Olympics....
Cheers,
Matt