Omega chronograph 33.3

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Hi everybody!
I want to learn more about this watch and would be grateful for additional information.
1. Are all parts original?
2. What model is this? ck987?
3. The right subdial has additional marking "01" (shown with red arrow in the photo). Does this mean the serial number of the dial? For example, were 99 salmon-colored dials produced, and this is the first of 99?"
4. What could be the approximate value of this watch ?

The watch needs repair, but all parts are in place, the balance wheel is not damaged, and that's encouraging!

 
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I'm not sure of the reference number of the gold cases. I think this is the second iteration of the 33.3 with two pushers, one being a crown pusher, the first only had rhe one at 2 'o clock. An early one anyway from the 1930s

@watchyouwant and @mac_omega will be able to help with parts originalty
 
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What you think it is a number 01 is an incompletely printed (or partly faded/worn off) number 50 of the centre snail scale.
IMO dial looks original
The pusher capping is worn through
Other than this I don´t see any red flags