The RTR and the Army had 38 and 39 models between them..The picture below shows the RTR team on the 38 bikes with the registration numbers mentioned...The second photo shows ISDT riders at the docks in 1939...Note the 'civvy' M24s...One of these bikes is in the original photos I have of the team in Austria...I'll try to dig out and copy the originals....Ian
23x M24 was also delivered to the War Office in September 1939, according to the BSA factory ledgers. I have found these about 1 year ago and informed O&M, for the next version of their book.
Interestingly 1 of the original M24 War Office engines surfaced about 6 months ago and is now in the hands of a Dutch MC collector.
Those bikes may be 1938 registered as stated in the previous photo but they are 1939 bikes with the '4 screw' tappet cover..of course they could have been registered from August to December 1938 and still be to 1939 specification as the 1939 BSA model year started in August 1938....Ian