1968 Bulova Date King 'NO'
Case is 10K Y RGP with stainless steel back, case number 2520, dated M7; dial is a gold color with black Roman Numeral markers and black hands; movement is a Swiss-made 11ALCD, manual-wind 17-jewel, dated M8; has the original expansion band that matches the ads.
Set of ads from 1967/1968. The Date King line looks to have come to an end by the late 60s, and I do not find this particular model in other lines. This design in automatic form is also seen in the Clipper line.