Be an informed Zodiac Collector. Check out the Vintage Zodiac Catalogs Website

Author Topic: Sea-Chron crown measurements please  (Read 538 times)

Offline pgm_02

  • Newbie
  • *
  • Posts: 5
Sea-Chron crown measurements please
« on: April 01, 2021, 12:21:45 pm »
Hi All,

Can I please ask if anyone has the measurements for the Sea-Chron crown? I have acquired a piece with a replacement crown, I see there are a few available on ebay etc however I am unsure of the measurements. Have searched multiple sales posts, google etc and not come up with anything.

Not sure if the link will work to a picture of my watch:[<img src="https://i.imgur.com/vBul06Um.jpg" title="source: imgur.com" />]

Thank you in advance,

Paul.

Offline Butch

  • My postings are my personal opinons based on 25+ years of collecting Zodiacs and the reference materials in my possession.
  • Global Moderator
  • *****
  • Posts: 3204
  • Butch@VintageZodiacs.com
    • Zodiac Watch Research
Re: Sea-Chron crown measurements please
« Reply #1 on: April 04, 2021, 09:39:37 am »
I thought I had one here I could measure but I do not. The SW crowns are 5 MM so it is larger than that.

Anyone have this watch they can measure?
Collecting Zodiacs is not for the meek; be an educated collector.
Click below to see our subscription service and support the web sites.



Offline YuriyV

  • Member
  • **
  • Posts: 459
Re: Sea-Chron crown measurements please
« Reply #2 on: April 05, 2021, 04:21:40 am »
Diameter - 6.2mm
Tube - 2.4mm
Tap - 11 (0.8mm)

Offline pgm_02

  • Newbie
  • *
  • Posts: 5
Re: Sea-Chron crown measurements please
« Reply #3 on: April 05, 2021, 08:29:44 am »
Thank you for the replies, much appreciated now I can hopefully find a replacement. The more I wear the watch the more I appreciate the design, the smaller sub dial at 6 o'clock is something that I haven't see before with valjoux 72 movements.

Offline Ultra-Vintage

  • Member
  • **
  • Posts: 763
  • Vintage Watch Fanatic
Re: Sea-Chron crown measurements please
« Reply #4 on: April 05, 2021, 11:35:01 am »
Diameter - 6.2mm
Tube - 2.4mm
Tap - 11 (0.8mm)

I wasn't going to comment on this one because I figured you would post, but I think you might want to check on your measurements.  I have 3 Sea Chrons, and checked them all.  I got 6.3mm on the crowns, but that part might just be a difference in our calipers. 

The tubes for these are a standard 2.5mm used on most chrono and dive watches, 2.4 is not a common size for anything vintage. 

The tap is extremely different though.  Tap 11 is a quartz movement size, very flimsy and easily broken.  Most original chronograph crowns/stems were a heavier tap than the standard 10 (.9mm), with the average being a tap 7 (1.15-1.20) which is what the original Sea Chron crowns are.  Just before the quartz crisis manufacturers starting using Tap 10 stems/crowns for vintage Chronograph movements, but they were originally made in lower quantities and many are gone/used up.

Offline pgm_02

  • Newbie
  • *
  • Posts: 5
Re: Sea-Chron crown measurements please
« Reply #5 on: April 05, 2021, 09:46:33 pm »
Thanks Ultra-Vintage, have a put together Zodiac Seawolf? that was my only negative local buying experience here in Singapore that has a crown that is. close to the measurements so if I am lucky I may be able to use that.

For a couple of years I have assumed its a bitza watch. based on one of the picture on this site - I have attached pictures justin. case opinions differ from memory it has a 21 jewel Zodiac movement which I couldn't find in the same configuration as the watch I purchased.

Offline Cobber

  • Member
  • **
  • Posts: 315
Re: Sea-Chron crown measurements please
« Reply #6 on: April 06, 2021, 10:37:05 am »
Never heard the term "bitza" before but seems pretty accurate.  Seconds hand doesn't go with the minute and hour hands.  Dial is definitely an imaginative redial,  don't know of any vintage Sea Wolfs in this case that had a 21 jewel movement.  That thing is wild.

Offline Ultra-Vintage

  • Member
  • **
  • Posts: 763
  • Vintage Watch Fanatic
Re: Sea-Chron crown measurements please
« Reply #7 on: April 06, 2021, 01:39:43 pm »
Thanks Ultra-Vintage, have a put together Zodiac Seawolf? that was my only negative local buying experience here in Singapore that has a crown that is. close to the measurements so if I am lucky I may be able to use that.

For a couple of years I have assumed its a bitza watch. based on one of the picture on this site - I have attached pictures justin. case opinions differ from memory it has a 21 jewel Zodiac movement which I couldn't find in the same configuration as the watch I purchased.

From the Ebay listings I have seen, they have some "creative" watches in Singapore.  Besides the redial, I can't tell what they did with the bezel?  21 Jewel could be a switched movement, or rotor.  I do not know the total production breakdown on that reference as to whether some could have had 21j, but I am used to seeing 17j in them.

 

Copyright� 2021, All Rights Reserved. This site may not be reproduced.
By accessing this web site you agree to not take any images for use on any other web sites.

Advertising Information� |� Privacy Policy� |� About Us

Visit the Zodiac manufacture's web site at www.zodiacwatches.com for all your post-1990 Zodiac needs.
This web site is not affiliated with Fossil, Inc, current Zodiac brand owners

Website by Face Forward Studios

Clebar Watches
Zodiac Sign