Thank you, I tried a serial number lookup, but no luck. If it is a c model I will be more inclined.I can't make out the tag. I think it must be either an MFC or an MIC. The MFC came with the table feed assembly, the MIC did not. The Atlas user's manual and parts list is available in the downloads section here. Robert, moderator of the Atlas section, can probably identify it from the photos. He is an expert on Atlas stuff.
These Atlas mills can be Frankensteins - made up of parts from different models. LOL.... mine is.