This sold on the auction site for £39 plus postage.
Is it British? My guess is European but I have never seen this model before. Nice, but not my kind of thing when in this condition - I know how hard it is going to be to source those missing buttons and the missing base.
Does anyone know anything about this model of Intercom?
It is a BTMC telephone based upon a 23639.
I don't know who made the intercom.
Regards
Jack