I'm not an expert. I'd wait 4 some1 to chime in w/ more Omega knowledge but the Seiko nvmnt is pretty obvious that somethings not right.
Just arrived from an ebay seller. Nobody else bid at £250 posted. His pictures (there were more, equally blurred): On my wrist. Presumably it's a 600 or 601. I like this! Running nicely so far, winds like silk. Sadly I might have to replace the bracelet as it's a bit tight, don't suppose anything can be done about that. Original dial, hands, crystal, crown.
This Omega Seamaster ref. 2577-19 SC, cal. 354 from 1952 has just arrived. Some patina on the dial, movement runs very well, but properly needs a service and a gasket
Zenith Chronometre Cal 2532PC from around 1964 To give me a distant feeling of my Grail (Cal 135), but 20 times cheaper than the most affordable ones
@adam78 Very nice!!! I'm after one of those as well. Obviously not hunting well enough. Is it a cal 321? Congrats and DIBS