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A Bell-matic research thread

5478 Views 68 Replies 16 Participants Last post by  dapellegrini
I've recently acquired several Bell-matics and my curiosity has again gotten the better of me. In an effort to sort parts mash-ups from original configurations, I have started to collect case back and dial data.

Having done this for the last year with the World Timers, I will say the Bell-matics are much more common. I have gathered over 400 watches with almost no effort (aside from the collecting part) - no searching sales threads from 10 years ago, or the darkest corners of

With just the basic model and serial numbers cataloged, I am seeing some interesting trends that I thought I would share.
  • The model numbers appear to have been released in order, so 7000's date back earlier than 7010's, the 6000's were released before the 6010's, then the 6020's and so on.
  • It would appear that models ending in 1 and 2 are successive, replacing the prior - for instance the 4006-7000 seems to have been replaced by the 4006-7001 and then the 4006-7002 - so I don't think those are regional variants. This trend follows on all other models in the 4006 family
  • Models ending in 4 or 6 appear to be SGP - so the successive thing seems to be for the 0's to 1's to 2's - stopping there.
  • Models ending in 9 are the US Market versions
I've started a page that collates the data as I collect it here:

You can scroll it out for the charts showing production dates. All of the watches are also listed for cross checking any anomalies, etc.

Here are some charts from that page for those that don't like to click off the site:

Rectangle Slope Font Parallel Electric blue

Slope Triangle Font Parallel Circle
Plot Rectangle Slope Font Parallel
Rectangle Plot Font Parallel Slope
Rectangle Slope Plot Line Font
Rectangle Font Plot Parallel Slope
Rectangle Plot Slope Font Parallel

Rectangle Plot Slope Font Parallel
Slope Plot Rectangle Font Parallel
Colorfulness Rectangle Slope Plot Font
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EVERY Seiko collector needs at least one BellMatic !

Are you intending to add the date-only 4005s to this research ?

Will the 21 vs 27 Jewel Count be layered in ?

So you've seen this photo over on WristSushi, my three left to right:

4006-6089 Aug. 1976 (non-horseshoe back) Proper B243 bracelet (BIG thank you to @zeke441 for the perfect rebuild)
4006-6011 June 1971 (horseshoe case back) Proper B051 bracelet
4006-6059 March 1974 (non-horseshoe back) Proper B168 bracelet

Watch Analog watch Light Clock Rectangle
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Damn, not sure I need a thread like this..hehe. They always make my mind wander to the "what if I try just one" realm.

<* shark >>><
You simply MUST Larry if you want to keep your Vintage Seiko Collector Card.
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@dapellegrini Doctor of BellMatics Dan, what have you on the available languages for the day disk?

So far I have English, Spanish, Arabic and what I believe to be Portugese based on days of week showing as "SEG" and "SEX" (ok, ok, ok, don't blame me).
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