I just started a VS4 restoration and this one will follow. It is actually very nicely preserved with several layers of housepaint on it. While ugly there is almost no rust and it appears pretty straight. Fortunately it came with 2 correct NOS aluminum side cowls and nice aluminum front fender, which isn't on the bike yet.
The mystery with this one is the engine. It is a VAN1M prefix engine and the registration papers from the early 60's show this engine in the scooter? There is little info on the web about this engine. From what I can tell they were installed in 1952/1953 timeframe?
I would like to create a registry with other 788-100 owners and share details. If anyone has one of these rare scooters or knows someone who does, please contact me.