Looking for info on seamaster deville

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Hi, a friend has just acquired this vintage seamaster and has asked me to try and find any information on it.
I know very little about vintage so what better place to ask than here?
It appears to be a front loader case, the bracelet is a 1037 with 570 end links.
Any ideas on age and value if any?
Thanks in advance.
 
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This one is a mid-size, probably ref 165.004, caliber 670/671, ca mid 1960s.

Smaller size on these keeps values down, maybe $500 US even with the BOR bracelet.

Looks like a nice unmolested watch. Get it serviced if its going to be worn.