Omega 1952 9K pink gold (owned) Can anyone tell me what it is?

I own this watch. It got sent to Omega in Switzerland to attempt a service back in 2011. They didn't. They hated it (see service item).

But they did at least give me this information:
Serial no. 13735980
Watch reference. BL201762

From that I believe it's from 1952/53 and its 9K Pink Gold.

It was my daily wearer for a long time, but I kept knocking or cracking the crystal. The crystal has a really raised bubble profile. A friend put a non-standard bubble on it, which fit, but I ended up cracking that too.

I recall the guy in the Omega shop (in Melbourne) was excited by it's rarity/redigree. But fair to say the folks in Switzerland were not so charmed by it.

Any help identifying it greatly appreciated. (I bought it from a second hand dealer abot 25 years ago, never had any documentation.)

Very nice gesture.

Except for some commonwealth countries. Only they made 9kt gold cases. So it isn’t an Omega made case which why they refused to fix it.

If you can find a goldsmith. Maybe they can repair it. Replacement crowns are gold plated. Maybe find a vintage to replace worn one

9ct Australian hallmarks, cal.420
very common to see these in stainless steel as well.

Here's another rose gold one in NSW:
https://www.ebay.com.au/itm/2567264...uid=fo5f10vuqr6&widget_ver=artemis&media=COPY

Well I wouldn't say they hate it, they just don't have the parts