Adrian-VTA
Global Moderator
Adelaide, South Australia
Posts: 5,327 
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Post by Adrian-VTA on Nov 3, 2019 0:09:15 GMT -8
Can anyone tell me what the closest equivalent in the 4 digit movement codes this is?
I have NFI.
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Mr.Jones
Needs a Life!
Hamburg, Germany
Posts: 4,679
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Post by Mr.Jones on Nov 3, 2019 2:11:39 GMT -8
It's more likely a case number.
Sealion m55? They used 394/6205/6206 Movements, as far as I know.
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Post by huangcjz on Nov 3, 2019 6:18:01 GMT -8
I think it's most likely a model number. The 5- and 6-digit ones they used in the early-to-mid 1960s that don't start with a 1 as the first number (so just after the 1950s to early-1960s time of the model numbers with dial size in ligne) can often be parsed similarly to the later ones, adding zeros where necessary to make them up to 3 or 4 digits - so 72898 would later become 720-8980, so calibre 720, case number 8980.
e.g. the Alpinist 85899/858990 is 850-8990, calibre 850 (later 7600/7620?), the first Seiko Sportsmatic 5s from 1963, 41897 and 41898 are 410-8970 and 410-8980, calibre 410 (later 6606), the Cronos Self-Dater waterproof model from 1964, 718990 is 710-8990, calibre 710. Seikomatic Weekdaters 408980 and 408990 are 400-8980 and 400-8990. Seikomatic slim 83198 is 830-1980, calibre 830. Seikomatic slimdate 84099 and 841990 are 840-0990 and 840-1990 (later calibre 8305). The King Seiko 44999 later became the 44-9990. The Grand Seiko Self-Dater 43999 is 430-9990, and the Liner Chronometer 46999 is 460-9990, both from 1963. This would also make the Crown Chronograph 45899 calibre 450, case 8990, which fits with it later being re-numbered 5719-8990, though I've never heard of the 5719 being called calibre 450 before.
Looking at Seikomatic Archive, there are apparently calibre 603/6201 watches with model numbers 618980, 618990, and 619980, so apparently calibre 603 was also known as calibre 610. There are models with calibre 395 with model numbers 80897, 80898, and 80899, so apparently calibre 395 was also known as calibre 800.
The problem is, I don't know what movement 720 is either, and it's hard to work out, since Seiko's 3-digit calibre numbers often had no rhyme or reason behind them and how they relate to each other. So perhaps search for photos of other Seikos with a 5- or 6-digit model number beginning in 72, and see what movement they have, if possible?
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Adrian-VTA
Global Moderator
Adelaide, South Australia
Posts: 5,327
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Post by Adrian-VTA on Nov 3, 2019 7:26:12 GMT -8
As it turns out, I had the answer all along. Look for a case number/3 digit/4 digit conversion matrix post, coming soon...I think I have them all.  |
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Post by huangcjz on Nov 3, 2019 8:19:05 GMT -8
Looking at the 3-digit calibre numbers in the 400-and-something series, I wonder if for them it's a time thing, since they were all introduced at about the same time? Calibres 400, 410, 430, 450 (5719), and 460 were all introduced around 1963, and were all Suwa movements, so perhaps that was the order in which they were developed? I guess the Liner Chronometer 460 movement probably came after the Crown-based 430 movement, since the Liner 3140 movement in 1960 came after the Crown 560 movement in 1959. Although they have nothing else architecturally to do with each other, apart from the 430 and 450 both being Crown-based. Daini calibre 44 fits in with this pattern too, being introduced in 1963, though Daini calibre 45 was much later and doesn't fit in with this pattern. I wonder if there's a calibre 420. It doesn't seem to apply for those that don't begin with 400-and-something, though.
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Post by leffemonster on Nov 3, 2019 11:32:50 GMT -8
As it turns out, I had the answer all along. Look for a case number/3 digit/4 digit conversion matrix post, coming soon...I think I have them all. If you've found anything for J13086 I’d be very interested, especially crown and crystal codes. |
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Post by huangcjz on Nov 3, 2019 14:07:07 GMT -8
As it turns out, I had the answer all along. Look for a case number/3 digit/4 digit conversion matrix post, coming soon...I think I have them all. If you've found anything for J13086 I’d be very interested, especially crown and crystal codes. Just in case it might help Adrian out, since I think the catalogue is arranged in sections by calibre number - that watch has a calibre 850. I can't remember if the 4-digit calibre number for calibre 850 is 7600 or 7620, but it's the basic hand-winding member of the 7600 family used in later time-only Champions, etc.. Sometimes there are case/model numbers in that dial ligne diameter numbering scheme which are the same across different models - I have a Cronos and a Champion (one of the ones with the early-type Champion movement, similar to the Cronos' movement) which have both got the model number 15026E, but which have different cases to each other. |
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Adrian-VTA
Global Moderator
Adelaide, South Australia
Posts: 5,327
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Post by Adrian-VTA on Nov 4, 2019 17:21:22 GMT -8
No luck on that, Rod would have the info As it turns out, I had the answer all along. Look for a case number/3 digit/4 digit conversion matrix post, coming soon...I think I have them all. If you've found anything for J13086 I’d be very interested, especially crown and crystal codes. |
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HiBeat
Global Moderator
SEIKO Iko Iko GDTRWS
Posts: 8,664
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Post by HiBeat on Nov 4, 2019 19:45:04 GMT -8
As it turns out, I had the answer all along. Look for a case number/3 digit/4 digit conversion matrix post, coming soon...I think I have them all. This is fantastic stuff Adrian! We always get stuck trying to find the part numbers for crowns, crystals, hands etc when the watch case back is stamped “J12345” etc. What year is that catalog? Gotta get me one. I only have the ‘72 & ‘79 catalogs. |
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Post by leffemonster on Nov 4, 2019 22:08:01 GMT -8
No luck on that, Rod would have the info If you've found anything for J13086 I’d be very interested, especially crown and crystal codes. Well that’s me buggered then, Rod already turned up a blank  |
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Post by huangcjz on Nov 8, 2019 6:57:11 GMT -8
I have managed to answer my own question regarding calibre 420 - it is the 7606, which seems to date from 1964 rather than 1963 for all the other 400-series movements - there is a 42799 model, which later became the 7606-7991 (and the later model's dials still show the same 42799T0 dial code that the earlier models had).
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Post by huangcjz on Dec 31, 2019 9:24:25 GMT -8
As it turns out, I had the answer all along. Look for a case number/3 digit/4 digit conversion matrix post, coming soon...I think I have them all. The other casing parts catalogue that you posted today from your friend Danny reminded me of this post. May I ask which year the catalogue you have is from? I guess it must be different to Danny's 1966 one, since his one is horizontal and your one is vertical. |
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Adrian-VTA
Global Moderator
Adelaide, South Australia
Posts: 5,327
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Post by Adrian-VTA on Jan 1, 2020 2:21:08 GMT -8
1970 As it turns out, I had the answer all along. Look for a case number/3 digit/4 digit conversion matrix post, coming soon...I think I have them all. The other casing parts catalogue that you posted today from your friend Danny reminded me of this post. May I ask which year the catalogue you have is from? I guess it must be different to Danny's 1966 one, since his one is horizontal and your one is vertical. |
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