Help identifying this Mills slot machine

[Talon227]

Hi, I'm new here. I was hoping someone might be able to tell me more about this machine that I have. From what I can tell it seems to be some variation of a Mills Bell-O-Matic, but I can't find any information about this specific model. I believe the stand was originally used for a different machine so if anyone has any info about that too that would be great!

[radiorich123]

Mills M heads was made in the early 1960s in Chicago for the casinos at that time.

[nvmos2]

Bueschel writes that the Model M (M-Head) was introduced in 1968. Fey dates it to 1967. It was produced in a variety of versions. It appears they were produced in Reno, NV. In 1961, Mills Bell-O-Matic "moved all of its operations to Reno and expanded quarters to produce " .....(machines for foreign and domestic markets). By the end of 1963, however, Mills had ceased to exist as an independent company and was merely the Mills Bell-O-Matic division of TJM Corp.