Hi Watson, and Grumpy,
Well this machine of yours, really puts the cats amongst the pigeons... grin
It clearly shows, that is if Grumpy and I are correct in our assumptions,...that is, allowing roughly 6 months for delivery of the engine to erection of the machine in the SB factory at Thebarton. your machine is the earliest 17" twin rail Scott Bonnar we have seen on the forum, since my joining the forum in 2005....and it is a Scott Bonnar Model 45 "Craftsman".

To prove this theory, we need some 'provenance', that is, evidence that this machine was erected with this engine in place "as original fitment"...Have you spoken to the original owner re: the purchase date or perhaps a receipt....If so, this is a very important machine for the archives...and to all aficionados of the Scott Bonnar brand...it put the date of the introduction of the twin railers back by 12 months....or that the engine was not fitted for well over that period...
It would be fabulous to know the exact provenance of your machine.
Watson, many thanks for posting! good1
cheers


Please do not PM me asking for support. Please post your questions in the appropriate forums, as the replies it may receive may help all members, not just the individual member.
Kindest Regards, Darryl grin