1952 Omega Seamaster Case Back and Crown Sourcing Help

brianmg · Aug 10, 2026

Hello, I have a 1952 Omega seamaster automatic with calendar at 6 O’clock. It has the square date window, the gold capping and hands and markers. The crown was replaced at some time in its history and the back has an engraving on it. I do not want to sand it out but would like to get a crown with the omega stamp and a back, does anyone have such a creature. I love this watch , it has the bumper 353 movement , ref#2627 Thanks for reading.

Wat-1 · Aug 10, 2026

Nice watch
EBay is your friend , search the ref and you’ll find parts
that way you can keep the original back if you decide to put it back on anytime
I believe the crown is original just worn it’s logo off exactly like mine,
I’m all for engravings it tells a story not all I own have them but If they do it doesn’t bother me unless it’s super cheesy haha
Here mine little bit in bad shape needs a new seconds hand

DON · Aug 10, 2026

Leave the back. Regardless of what it says. It keeps the history of the owner alive. Sanding is the same as erasing them.

Unless you actually find a back and it’s not a BIN auction. There will be multiple bidders. Especially on gold filled cases due to wear.

As to the crown. Find reference number of case inside back and Google. Find the same crown design on multiple cases and that’s what you most likely need. Current crowns are gold plated. NOS crowns sold on EBay are gold plated. Finding an early original 50’s gold filled model will take time.

Leave the back

Spruce · Aug 10, 2026

You don’t post photos of your caseback but in 1952, Omega was not putting hippocampi/hippocampus on the caseback of the Seamaster watches.

The 1950 bumper is a Seamaster but doesn’t have ‘Seamaster' on the dial.

The 1954 does have ‘Seamaster' on both the dial and the caseback.

So, as @Wat-1 suggests, you can probably find a replacement crown on eBay. A slight problem might be that the colour of the replacement crown might be different to the case and existing crown.

So far as the caseback is concerned, any competent jeweller can polish the engraved inscription out.

1952 Omega Seamaster Case Back and Crown Sourcing Help

brianmg

Wat-1

DON

Spruce

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