Thanks for the response Gatorcpa, and Fidjeland: it's safe, don't worry.
I took my watch to the local Omega dealer and had it opened up. Took some pictures.
If i'm reading the info correct, i guess it must be a "Jubilee" from 1962:
Ref number: 131.001 brings up six watches in the Omega vintage database (Witch seems to functioning again).
If I read the info correctly the watch is a Cal.286. The only watch out of the six that show up on the database with a 286 caliber number is this "Jubilee".
According to the local Omega-dealer the value would be approximately 150 euro (200 US dollar), so not that big of a deal, but still a nice watch to me.
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