This is a very nice example of a Snowdon Trimphone. These are more vivid colours than the original standard three colours available and were introduced to revamp the Trimphone in the early 1980s. This plan did not work and hence these are hard to find.
This one has been fitted with an essential electronic microphone to bring speech quality up to modern standards. It is all original and has been converted to plug in and go. It has the original very long line in lead with a curly section.
I will make a dial label with your information at no extra cost.
Postage and packing is £10 to any UK address.