Help with watch

[hellfire_436]

Hi All this is my first post here. I am trying to get some info on a watch that was givin to me from a relative,I was told it is valueable but I cannot find any info about it.Any help would be great.

[skypilot]

Most of the little knowledge I have is about Accutrons but I don't see anything about that watch that would make it valuable. I can't tell what the letter and number after the word Bulova are but if it's M1 it's a 1961 watch and if it's N1 it is a 1971 watch.
If you would pop the back off and take a picture of the works that might help.
Maybe someone who knows more will come along.