I have a picture of what i believe to be an austin tilly the number on the door, the number is m1540096. Can anyone give me any more information?
M1500000 - M1599999 - Rebuilt Cars. Sorry, not a lot of help...There were also similar blocks around these numbers for motorcycles, trucks, lorries and tractors. It's difficult to pin a date to them. The system seems to have come into use around 1943....However, if you have an earlier photo, it would be interesting to see it.
As Rich says the batch covers a range of vehicles. Example M1512382 Hillman Mk IIA 10 HP ( source Wheels & Tracks ). cheers Kevin