What did I find here?

[countryman]

They might be used as toy blocks at best, but only if the batteries were removed in time.

Here are some pics of the D1. It has a vermilion stamp III/35 and a green stamp 2-49. Apparently it was refurbished an received a new 8-48 transmitter at that time.
A German transmitter capsule fits nicely into the F1 handset without any alterations. Surprisingly, as it is shaped totally different. The phone transmits and receives just fine with it. I'll clean the dial and contacts next as it still misdials, while the speed seems correct.
Last pic is my "subset". I do not need a ringer as there are plenty phones ringing where I connect it :-)