Hi,
I checked the list I have of Matchless 1930 to 1940 and the prefix V/2 is not listed.
The VMCC Register only has one V2 entry, although I suspect two more without a prefix are the same. Model type is not given but simply 1929 500cc ohv with Sturmey-Archer gearbox. It appears to have become a V/3 prefix for 1930, but the Matchless list I have doesn't mention that either.
I've gone off Matchless since a borrowed 1930 model seized up on a rally in Australia last month and dumped me on the road, while resting on top of me so that I could not move.
Cheers, Peter C.