Possible 1965 Bulova American Eagle 'D'
Decorative bezel and dial. Case back dated M5 and marked stainless steel, .0015 gold electroplate bezel. Inside caseback stamped 2503. Movement is a manual winding 11AL dated M5.
My reasoning for variant 'D' is based on the listed ad price of $35.95 and the availability of two variants at that price per the '64 pricelist. One of these is already identified as the 'F', leaving the other variant at this price the 'D'
Supporting ad from 1966