Good morning,
learning about the banjo is very fascinating, I'm always amazed what kind of ingenious solutions our ancestors put up to their daily problems... in Germany we have some nearly extinct dwarf arm signals who fit in tight spits, check out the links below:
Balduinstein
Goslar
Furthermore I'd to ask if there are any semaphore signals on the electrified lines with third rail in the south worth checking out, as our plan mainly involves travelling along the southern coast, maybe even up to Penzance.
Thanks!
Best regards,
Robert