R41
I spotted this Multiplex today at local F3J contest.
Front View
It is a six channel set on 35 MHz with five proportional and one switched channel, with more than one meter long conical tip antenna. The Tx's owner is a boy whose father bought this set around 1974.
The Tx is still in use and works flawlessly! It is used for small soarers and trainers.
Internals