Looks like a got a few hits off the actaonline members.
Looks like the 555 console type switches as I posted would have been too small.
Two said it appears to be foreign (European)
I am told that the N1 ans N2 mean "night lines" and the M is for "monitor" and these buttons were on a PBX console probably Siemens or Noelco, but not sure yet.
The green ones are not push button but twist switch's the "I" indicates if they are off or on. their origin is still in question.
Anyone with old PBX stuff or contacts with European parts or collectors?
We actually might be narrowing this thing down this time.