Bulova 1966 Banker "P"
Another sock drawer watch purchased from the niece of the original owner as seen. She said it was a retirement gift, seldom worn; and had been in her dresser since he passed in the mid 1970's. 10K RGP and marked M6 on case and movement. 17 Jewel manual wind. My best guess is a Banker "P". Seems to be a perfect match to the 1967 ad in the DB "partial" ad section