Seiko 7005 2000 crown - Seiko & Citizen Watch Forum Japanese Watch Reviews, Discussion & Trading
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Old 11-01-2016, 08:51 AM   #1 (permalink)
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Default Seiko 7005 2000 crown

Hi
I have a pretty beat up Seiko 7005 2000 17 jewel automatic I am trying to get back working again. One of the missing pieces was the stem/crown. I have bought some stems that fit, but am unable to trace a gold plated crown as a spare, or even the part number.
Cousins UK list it as 40N27NN1, obsolete. On Jules Borel there are two different references, 40M16MS1 obsolete and 40N27NA1. The latter is available but I don't know if it's the right item, and Jules Borel have never allowed me an account anyway.
So really multiple questions:
1. What is the correct part number?
2. Where would I be able to buy it? I've searched Ebay.co.uk with no luck, and Google;
3. Failing getting an authentic one, does anybody have the watch and can give me the crown dimensions? Eg. height, width/diameter etc. and I could try and find a replacement. Thanks!
Stephen

Last edited by chadders1966; 11-07-2016 at 12:57 AM. Reason: Correction
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Old 11-03-2016, 05:29 AM   #2 (permalink)
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Hi Stephen, I have one, will try and locate at the weekend and get you the measurements
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Old 11-03-2016, 08:07 AM   #3 (permalink)
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Thanks, that would be really helpful.
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Old 11-06-2016, 04:23 PM   #4 (permalink)
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Hi,
I think I put this in the sub-section by mistake. How would I get it moved? You never know, I might get an answer . Thanks
Stephen
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Old 11-06-2016, 04:43 PM   #5 (permalink)
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The first 2 numbers you give start with 40, that's the diameter of the crown, its 4.0mm in diameter, the last part number you give starts with 49, which would mean its 4.9mm in diameter, so too big.
4.9mm is an odd size, they usually go up in increments of .5mm, are you sure that numbers right?
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Old 11-06-2016, 05:06 PM   #6 (permalink)
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Quick bit of research and Borel lists *40N27NA1 which also fits the gold cased 6139 6012/5.
I'm sure ive seen crowns for these somewhere on the interweb but cant remember where.
The silver version will be 40N27NS1, and those I'm pretty sure are available aftermarket for the 6139's.
Also try giving Stephan a pm. (forum name is Seikochrono), he might have a genuine crown.

Quick edit, The last letter of the part number represents the colour of the crown, A= Gold S=Silver(stainless steel) Cousins have got it wrong, IIRC N= Titanium but I'm not 100% sure on that

Last edited by ivorbiggin; 11-06-2016 at 05:12 PM.
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Old 11-07-2016, 12:49 AM   #7 (permalink)
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Thanks, very helpful information.

Edit - apologies as well. That last number should read 40N27NA1, keys too close together!

Last edited by chadders1966; 11-07-2016 at 12:56 AM.
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Old 11-08-2016, 07:46 AM   #8 (permalink)
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Quote:
Originally Posted by ivorbiggin View Post
Quick bit of research and Borel lists *40N27NA1 which also fits the gold cased 6139 6012/5.
I'm sure ive seen crowns for these somewhere on the interweb but cant remember where.
The silver version will be 40N27NS1, and those I'm pretty sure are available aftermarket for the 6139's.
Also try giving Stephan a pm. (forum name is Seikochrono), he might have a genuine crown.

Quick edit, The last letter of the part number represents the colour of the crown, A= Gold S=Silver(stainless steel) Cousins have got it wrong, IIRC N= Titanium but I'm not 100% sure on that
Hi
I would have contacted as you suggested, but I need 10 posts. I don't want to just make random posts, so I will wait. Thanks again.
Stephen
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