This is the only 66 -67 I have
![Watch Analog watch Clock Grey Watch accessory]()
![Automotive tire Grey Motor vehicle Font Gas]()
If you have a Seiko from 1967 (or 1966)
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An Incomplete Record of 62MAS (6217-8000/8001) Serial...
Hello All. I'm currently putting together an update of the price trend analysis (last done here https://www.thewatchsite.com/21-japanese-watch-discussion-forum/256257-incomplete-history-seiko-6217-8000-8001-prices.html in mid-2017) for the Seiko 62MAS (6217-800x) watch. As well as noting the...
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That link to the 62MAS study is awesome. I need to read through it with a clear head (and some coffee). It inspired me to make a few similar charts...
For initial reference, here's 1964 - where number appears to reset each month:
![Azure Rectangle Slope Font Parallel]()
With the World Timers so far, 1967 looks like this (for the 6217-7010):
![Rectangle Slope Plot Line Font]()
Like this for the 6217-7000 in 1967 (re-edition of the original)
![Rectangle Slope Plot Font Parallel]()
And the 1966 Asian Games is all in one month, like this:
![Rectangle Font Slope Parallel Plot]()
For initial reference, here's 1964 - where number appears to reset each month:
With the World Timers so far, 1967 looks like this (for the 6217-7010):
Like this for the 6217-7000 in 1967 (re-edition of the original)
And the 1966 Asian Games is all in one month, like this:
Attachments
It's a lot to look at. If you start with 1964, it seems to me that there is a pretty obvious pattern where the production numbers reset each month, and fill out fairly evenly. There are some gaps, but I think those could just be lack of data points:
![Azure Rectangle Slope Font Parallel]()
In 1965 there were no world timers produced.
Then in 1966, we get the Asian Games version, all from August 1966, or at least all starting with "68", in two or maybe three major number groupings. First we see the [68]14193 through at least [68]15662 group, which looks pretty well distributed in that range. Then a huge jump to [68]80268 through [68]80987. Then another sizable jump to [68]86261 from there steadily marching to [68]88140
![Rectangle Font Slope Plot Parallel]()
These are uncommon watches, so data points are thin, but with the 22 examples here, they seem to be pretty clearly grouped. It took Seiko 10 months to manufacture around 100,000 world timers in 1964. Could they have really made 88,000 in a single month in 1966? It doesn't seem likely. Perhaps the third digit has another meaning, or maybe Seiko was sharing numbering across models this year/month, or maybe they just skipped large sequences... ?
Then 1967 happened. With the world timer series, we see a re-edition of the 6217-7000 in low production numbers, again seemly fitting the 1964 model, where the production counts reset each month they were produced (with perhaps August to September being an exception?):
![Rectangle Slope Plot Font Parallel]()
Then we see the 6217-7010, looking more like the 1966 Asian Games, but across multiple months - these sort of production number "plateaus":
![Rectangle Slope Plot Font Parallel]()
Data is thin on all of the watches from 1967, but of the few data points we have, it certainly seems like the production numbers are NOT reseting.
Then carry on through the rest of the data from 1968 to 1976 and the trend is again pretty clear - production numbers reseting each month.
So the odd ducks are 1966 and 1967.
In 1965 there were no world timers produced.
Then in 1966, we get the Asian Games version, all from August 1966, or at least all starting with "68", in two or maybe three major number groupings. First we see the [68]14193 through at least [68]15662 group, which looks pretty well distributed in that range. Then a huge jump to [68]80268 through [68]80987. Then another sizable jump to [68]86261 from there steadily marching to [68]88140
These are uncommon watches, so data points are thin, but with the 22 examples here, they seem to be pretty clearly grouped. It took Seiko 10 months to manufacture around 100,000 world timers in 1964. Could they have really made 88,000 in a single month in 1966? It doesn't seem likely. Perhaps the third digit has another meaning, or maybe Seiko was sharing numbering across models this year/month, or maybe they just skipped large sequences... ?
Then 1967 happened. With the world timer series, we see a re-edition of the 6217-7000 in low production numbers, again seemly fitting the 1964 model, where the production counts reset each month they were produced (with perhaps August to September being an exception?):
Then we see the 6217-7010, looking more like the 1966 Asian Games, but across multiple months - these sort of production number "plateaus":
Data is thin on all of the watches from 1967, but of the few data points we have, it certainly seems like the production numbers are NOT reseting.
Then carry on through the rest of the data from 1968 to 1976 and the trend is again pretty clear - production numbers reseting each month.
So the odd ducks are 1966 and 1967.
Perhaps of relevance, the 6217-7000's are marked JAPAN A ...
1964:
![Wheel Automotive tire Drinkware Automotive lighting Motor vehicle]()
1967:
![Automotive tire Automotive lighting Rim Audio equipment Material property]()
Where as the 6217-7010's appear to be marked JAPAN J:
![Brown Fluid Wood Cosmetics Tints and shades]()
1964:
1967:
Where as the 6217-7010's appear to be marked JAPAN J:
Now I've meandered a great distance from the original purpose of this thread - to riddle out the 1966 and 1967 numbers... but since we are deep in the weeds anyways...
In this dataset there were two models that had sub-model designations - 6117-6010 / 6019 in 1968, and 6117-6400 / 6409 in 1970-1972. Here's what those serial numbers look like. As the footnote says, red plots are models that end in "9", blue end in "0".
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In this dataset there were two models that had sub-model designations - 6117-6010 / 6019 in 1968, and 6117-6400 / 6409 in 1970-1972. Here's what those serial numbers look like. As the footnote says, red plots are models that end in "9", blue end in "0".
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