With the contents of this Medium Red/Green mid 1950s set, you could convert a set 6 into a set 7. This Set has been dated as being strung on September 1957 by the owner.
Photographs courtesy of Greg Rahn.
A set bought by Roger Fearnside has a different layout. It is a genuine Binns Road product because he had to remove it from the factory rapping!
Photograph courtesy of Roger Fearnside .