Replace Case Back - Omega 420 cal movement

Thread: Replace Case Back - Omega 420 cal movement

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  1. #1
    Member steddyrhodes's Avatar
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    Jun 2018

    Replace Case Back - Omega 420 cal movement

    So I got this vintage Omega with 420 cal movement (34mm case?) which I love, but the case and case back are not Omega. I do believe the case is gold filled and the case back is gold filled too, but I want to replace the case back with an authentic Omega case back.

    I found on eBay some cool Seamaster case back's but not sure what size case back I need to buy. Any ideas? I found 34.5mm, 30mm, 32mm. But don't want to buy a case I won't put on a watch.
    I know it’s not original, but if it’s already a donor case it’d be cool to have a Seamaster caseback.
    Dimensions of some that I saw:
    - 564 cal and 168.022 case
    - case 135.001
    - case 166.032
    - Case ref 166. 0213 o 366. 0845Name:  85778DD2-21AD-4F90-BEA9-0E93DC5DA008_1528341411350.jpeg
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  2. #2
    Member mleok's Avatar
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    Feb 2010
    La Jolla, CA

    Re: Replace Case Back - Omega 420 cal movement

    Unless you plan on replacing both the case and caseback, this seems like a bad idea insofar as maintaining the water resistance of the watch is concerned.

    Patek Philippe Calatrava 5119J; Vacheron Constantin Overseas; Jaeger-LeCoultre Grande Reverso Duo; Rolex Submariner 114060; Omega Seamaster 300; Montblanc Heritage Dual Time; Tudor Black Bay.

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