Comment by DonHopkins

My grandmother had a wall mounted phone in the hallway that could serve as a means of defense if you ever had a reason for such a thing. The whole affair was probably 10 Kg and the handset alone was more than a kilo. It helped keeping phone calls short I guess :)

It was this huge mounting plate with a separate set of bells (really big ones too, large house). The whole thing easily came to 25 cm off the wall. Unfortunately my family does not really appreciate old tech and it got thrown away. I think it was a pre-war device, all glossy wood with a built in shelf for your phone number book.