WX 179 was used in the 1929 and 1930 Senior TTs, as a Works entry, ridden by Oliver Langton in '29 (when it retired) and Phil Vare in '30. Photos of this bike from the Scott factory archives can be found in 'The Scott Selection, Volume 1', available from the VMCC.
This machine is well documented, and comes with plenty of archival photos and documentation. The registration is retained, as well, in England. The Scott is currently in Scotland, where some restoration work has commenced - including a new Roger Moss strengthened crank, and a new radiator. I'll get more current photos. Asking $20,000.