Jump to content

Stuck trying to find what miyota mvt this is


Danh

Recommended Posts

It’s a Miyota 3n20. Not easy to find a new alternate for. 5y20 is listed as the current replacement but has different dial feet positions, hand sizes and stem tap size!!! There is a watch on eBay with a 3n20 in Spain, but my Spanish isn’t good enough to see if its working.

Best alternate may be to find a Citizen 3220. There’s a new 3220 on eBay.com, but doesn’t look like they ship to uk https://www.ebay.com/itm/Citizen-Watch-Corp-3220-Original-Quartz-Watch-Movement-Japan-Made-1-Jewel-/273598188626.

Alternatively, there are many Citizen 3220 series watches on eBay.

Or you could google for other sources of both

  • Like 2
Link to comment
Share on other sites

Google is your friend :)

I searched Cousins to find the current Miyota of that size, then I googled for where that had been suggested as an alternative for obsolete movements, then hit the images button.  You just have to ask the same question a few different ways.

Actually, I found it quite quickly, but didn’t realise I had because the first picture I saw was pretty poor, so I kept on looking.

Took me about half an hour which I should have spent starting the next project in my toy box!!

  • Like 2
Link to comment
Share on other sites

15 minutes ago, StuartBaker104 said:

Google is your friend :)

I searched Cousins to find the current Miyota of that size, then I googled for where that had been suggested as an alternative for obsolete movements, then hit the images button.  You just have to ask the same question a few different ways.

Actually, I found it quite quickly, but didn’t realise I had because the first picture I saw was pretty poor, so I kept on looking.

Took me about half an hour which I should have spent starting the next project in my toy box!!

Thanks Stuart - I did start with cousins but never thought to back track the replacement

thats a great shout - thank you for your help

Link to comment
Share on other sites



  • Recently Browsing

    • No registered users viewing this page.
  • Topics

  • Posts

    • Unfortunately I'm not that lucky. I started on the train side and after I noticed the binding I pulled everything out except the driving wheel to rule everything else out. It still binds. I'm going to double check that the pinion is fully seated on the staff first, then if no joy I'll push the bridge jewel up a fraction of a mm. Fingers crossed!
    • Happy to have helped, great way to start the day with a win! 🥳
    • Thank you for the advise!! It worked. The setting screw was a lock/unlock to remove the rotor. 
    • I have that French tech sheet too, it is a little different than the English one (eg, it doesn't have the auto works diagram). BTW, it looks like you are looking up the case number in the 1979 ABC supplement. The 1974 ABC catalog does have the 3093 case. As you determined it takes the 1222-5 crystal.  When I serviced my President 'A' (which also takes that crystal), I was able to fit a 29.8 crystal from my DPA crystal assortment. Those are, in my opinion, a great deal. The assortment comes with 10 sizes each from 27.8mm to 32.4mm in 0.2 increments. I pretty much use them for any non-armored crystal that takes a high dome crystal. I think they no longer make them but Cousins has still has some in stock but when I bought them they were around $40 for the set and now they are around $100. Still, at 40 cents a crystal it's still a good deal. For the large driving wheel, I remember I once assembled the keyless/motion works first and when I placed the large driving wheel it was interfering with the setting wheel on the dial side as the teeth were not fully meshing and it wouldn't fully seat. If that isn't the issue I got nothing and am looking forward to see how you solve it 🙂
    • Not sure, but just looking at it, it seems like the screw on the right may be a fake? The one on the left may not be a screw in the regular sense at all, rather a 2 position device, I think you need to point the slot towards either of the 2 dots and one will secure and one will open. Like I said this is just my best guess looking at the pictures.
×
×
  • Create New...