It’s a nice watch- not necessarily the same size or reference as the other one you posted but similar, quite obviously.
It’s about mid-1930s indeed, crown looks original, hands as
@Radiumpassion says l- price really depends on the size and the condition of the movement.
The 12.68Z above sold for just over 650 euros on auction almost two years ago — and has now been flipped at least twice since, probably north of 1000 euros due to its very nice dial.
Size as well as the stains on this dial make a difference in this instance. Really hard to assess the impact of those stains in the current market. My initial reaction was 350-450 euros euros if the size is 31mm, but in the current market some people might not touch it with a 10 foot pole so you could try to offer 250 euros and see what happens.
Looks all original to me, in any event.
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