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Discussion Starter #1 (Edited)
Hello chaps,

Been trying to find out the definitive answer but no one seems to know for sure. When were the scuabpro 450 models made?
I thought it was 1978-79, however I've come across a few examples from 1977:
http://forums.watchuseek.com/f29/fs-original-seiko-scubapro-6306-7001-$1-650-a-680277.html

http://forums.watchuseek.com/f29/fs-ultra-rare-original-seiko-6306-scubapro-450-a-533448.html

and also saw one on a thread here form 1983?!
So what's the low down?
Also what's the earliest and latest models you've seen?
 

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Hello chaps,

Been trying to find out the definitive answer but no one seems to know for sure. When were the scuabpro 450 models made?
I thought it was 1978-79, however I've come across a few examples from 1977:
http://forums.watchuseek.com/f29/fs-original-seiko-scubapro-6306-7001-$1-650-a-680277.html

http://forums.watchuseek.com/f29/fs-ultra-rare-original-seiko-6306-scubapro-450-a-533448.html

and also saw one on a thread here form 1983?!
So what's the low down?
Also what's the earliest and latest models you've seen?
Good question Billy, I've been wondering the same?
The buggers are hard find, I know that.

High on my list.
 

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Discussion Starter #3
Yep they don't come up often. When they do it's hard to know what's legitimate and what's not. There doesn't seem to be a definite answer but it would be good to know what the earliest and latest dates of production are. Please do post guys!
 

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Discussion Starter #9
^ yes it certainly appears that way, though I'm surprised that there are some from 1976 and '77 tbh.
 

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Dear Thorien

I have done a quick search through our forum thread and noted the serial numbers are fixed with first 2 digits.

I like to speculate that there 5 batches of 1,000 units produced for the following years and month:-

serial no. year and month
68xxxx 1976 Aug

71xxxx 1977 Jan

83xxxx 1978 Mar

95xxxx 1979 May (Updated from Mario_d post)

39xxxx 1983 Sept

So the total numbers could be 5,000 pcs. Mario_d stated approximate 3,000 units produced in one of the thread.

This is my speculation, if any opinion please chip in.

Cheers
 

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Dear Thorien

I have done a quick search through our forum thread and noted the serial numbers are fixed with first 2 digits.

I like to speculate that there 5 batches of 1,000 units produced for the following years and month:-

serial no. year and month
68xxxx 1976 Aug

71xxxx 1977 Jan

83xxxx 1978 Mar

95xxxx 1979 May (Updated from Mario_d post)

39xxxx 1983 Sept

So the total numbers could be 5,000 pcs. Mario_d stated approximate 3,000 units produced in one of the thread.

This is my speculation, if any opinion please chip in.

Cheers
Well, if there's 5,000 of the bloody things out there how come I can't find one? - I've been looking for ages. (WTB anyone?)
 

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Interesting post:

Here is the red2ndhand version that is generally believed to be original. It is a 91XXXX. Previous guesses from the community was that there were no more than two batches produced, one in the late 70s and one around 1983 (presumably to explain the 1983 watch coming up from time to time). I do not think that there was any consensus as to the size of these batches but at least the 1983 batch was not expected to be 1000. Also, if we are getting towards 10 different production months (we already have 6 in this tread), it seems very unlikely that they made 1000 each month or that the total amount would be in the 5-10000 range. I woudl also find it very unlikely that Seiko had casebacks from two different years (a few months could be likely) to produce a larger batch. It is also of some interest that the Seiko Museum has very little knowledge of these watches which woudl be likely if it was a 5-10000 watch production run over many years.



- martin
 

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This Janice&Fred version (also fairly well known sellers) seems to be a 11XXXX.



- martin
Hi Martin

In the photo it looks more like 71xxxxx.

So its still the (77 Jan) batch.

But the the other one that is 91xxxx could be another batch.

In fact I noticed most of them there is a zero at the 3rd digit which could explain that up to 999 pcs for the batch. e.g. 710698 in this picture.

My further speculation
 

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Discussion Starter #19 (Edited)
Thanks for the info chaps and do please keep gathering as much info as possible.
My worry is that some unscrupulous people may have swapped cases or casebacks with 'normal' 6306 7001 watches to improve their specimen, in which case we will never know what's original and what's not. It's a real shame no records appear to have been kept. :-(
If we can get some sort of table together with likely correct years and months it may help prevent people buying possible lemons.
 

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More confusion

Hi Martin

In the photo it looks more like 71xxxxx.

So its still the (77 Jan) batch.

My further speculation
Agree, let us put it in the 71xxxx production, we can probably find a few more months to add to the mystery. Also, it can be noted that Seiko do not necessarily do 1000 batches, a lot of limited editions have been 200, 400 or 500 for example and you can also have mixed months as they were making non-Scubapros 6306s at the same time. The production of casebacks is completely separate from the production of dials so the assembly of 200 (or whatever number) Scubapro watches could have been assembled with non-consecutive casebacks from a number of different but hopefully adjacent months. To make it even more confusing, there is usually a time lag of 3-6 months between the caseback date and the date when the watch is sold.

- martin
 
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