Can anybody tell something about this watch / clock?

Hi,

can anybody tell me if this is a converted omega cal 12 pocket watch that the use to put in a clock?
It wears the omega symbol on the balance cock, but has no further "Omega" markings.
and is it made key wind.

thx

Doesn’t appear to be an Omega movement. Looks like someone cut the Omega symbol into the balance bridge

Doesn’t match the caliber 12 if you search on it

The movement looks like an Omega 19''' key-wound. What makes you think it is a 12'''? What is the diameter of the movement?
They were produced over quite a long period (roughly 1900 to 1910). Reference 525.19.
This was presumably because of a market still existing amongst 'traditional' customers who still wanted a key-wound watch.
The success of the 19''' was largely because of the 8760 patent (stem-wound and -set) - but the key-wound still sold.