I've now transcribed about 2/3rds of the MS cards and now havve a fairly good idea of their activities.
Basically they only ever made three models and for engines used only the JDL (Junior de Luxe) or the 2 speed 1F (no pedals, kick start).
The JDL can be divided into twp eras, initial manufacture, 1940-46, engine prefix XX or XXA, post war engine prefix 586 or S 586, 1946-49. After them is the 1F 2 speeder minus pedals, engine prefix 716 or 716A. 716 was a generic Villiers prefix dating from 1949 to 51 and 716A emerges in 1952. 716 prefix engines can be found in BAC, Bond,Bown, Sun and others. It appears to be the generic number Villiers used for batches of engines for 'B' League manufacturers.
So far I've found only one factory made sngle speed 2F powered MS. As Australia didn't have the pushbike pedal start legal requirement for autocycles I think MS considered a 2 speed kick start autocycle was a better seller than the pedalling off arrangement.
Frame numbers are scrappy Unlike the car cards the motorcycle section cards are handwritten. Some cards had a space for the engine enumber, some didn't. There was no requirement for the clerk to record the frame number so many didn't. Nevetheless there are enough frame numbers recorded to make some reasonable assumptions. To date it appears the autocycle numbers were lumped in with the regular bicycle frame production. The individual frame number appears to bear no relation to reality. The only part of value to us is the identifying prefix. It appears MS used a single digit plus an M in the 1940's so 8M means 1948, 9M 1949 and so on. 1950 was still a single figure 0 but then they started to add the 5 for the decade so 51M and so on. I will give highest and lowest numbers when I've finished.
Any question?
PS, The Malvern Star factory no longer exists, the Melbourne Exhibition and Conference Centre, known to all Melburnians as Jeffs Shed now covers the site.