Omega f300 cone - Seamaster or not?

ConElPueblo

It's not uncommon to see non-Seamaster dials in watches with Seamaster-branded casebacks. Sometimes even "Genève" dials in Seamaster cases.

Boojumhunter

Best resource I know is Paul's electric-watches.co.uk. The page on these beauties says of your 198.012 "The crown at 2 case came in both polished and with radial graining. Also the caseback was with and without the Seamaster logo. I believe the very first version was polished and with no Seamaster logo on the back."

The interwebs, amiright? Love these quirky forgotten gems. Buy and enjoy! (Paul services these as well, I'm a satisfied customer).

Pianotuna

G’day all.
Quick back story, have been offered a very tidy cone-cased f300. Interested because I don’t have one.
Seller is very reliable, have bought from him many times. His sources (Japanese typically) appear to be legit given the quality of offerings he has.
But, the watch has the ‘plain’ f300 electronic chronometer dial with a Seamaster caseback.
End of manufacturing run, or beginning perhaps?
Or, less likely, swapped out dial/caseback?

Couple of photos attached, input invited.
Thanks in advance.