This was my grandfather's watch, then owned by my father, who recently gave it to me. It's a 1966 Accutron, purchased in Seattle, in or around that year. I have none of the original packaging — just the watch itself.
It looks to be in excellent condition to my inexpert eyes; when I received it, it wasn't running, so I took it to a watchmaker to have the battery replaced. The watchmaker said everything was in order and he didn't have to do anything other than clean the watch and get it started again. It now appears to be running perfectly, fork humming and all. The one element I'm unsure about being original is the band, which is the elastic kind and has some sort of strange text printed on the inside of each of its bars, which I can't quite make out.
I've not been able to find any information online about the specific model, and I'm curious to learn more. Compared to other M6 Accutrons I've seen on this site, this watch appears different for its diamond-shaped case, the gold mesh-like pattern around the face, and the four markers on the face.
The text on the back reads as follows, going clockwise from the 1 o'clock position:
14 kt gold, J28935, M6, Waterproof, Patented, Bulova.