A 'Rohloff specific' frame, built in the 1950s?Am I missing something? (Or just being daft?)
I wouldn't call anyone daft, but you may have misread it, the description says:
Bob Jackson/ Rohloff custom build in 2007 with logos "Merlin" which was an alternative manufacturing name used by Jackson's in the 1950's. I don't know why they used the old name, but it's built by Bob Jacksons in 2007.