I have attached pictures of this 1956 omega cal 266. And some strange writing on the inside back of the case any help would be appreciated

 

That "strange writing" inside the case back is what you want to know. https://www.omegawatches.com/watch-omega-seamaster-omega-ko-2791

 

Looks very nice to me, unmolested, nice case and lugs, movement possibly untouched

 

So Is it a sea master

 

Fantastic what would this kind of watch be work in today’s market

 

2791 is the reference no.

A google search should give you plenty of info

 

What’s its current market value mate

 

These were made with or without the Seamaster text on the dial; I'd therefor be hesitant to label it a Seamaster. Many of the Omegas of this time didn't have a model name as such.

 

Ok thank you - I’m just wanting to know what this watch is worth as I think I may go over paid

 

Movement looks like it's been abraded or "tarted up".

Striations on the train bridge. Different colours on the barrel bridge compared to the balance cock and train bridge. Screws show some evidence of being worked on with wrong size drivers.

Just my impression.

 

It's difficult to say if anyone has overpaid for an item like this. Members on this site may spend a long time finding the right piece at a good price, while others might go to a dealer from the street and spend three times that amount - one has spent a lot of time, the other a lot of money.

I think it looks good and it is a reference that wears well and is robust too

 

It's not a reference I'm hugely familiar with. Try search for previous sales on this forum/eBay/google for an idea.

 

Value is what someone would pay for it. Check reference number on ebay completed auctions for value. If you like the watch, it is worth what you paid for it.