Dust on a classic car always causes curiosity, you know, but if the car in question is an SZ, then it gets a lot of attention.
The seller briefly describes the history of this car: it was built in 1960 but registered only in 1965 and then abandoned in a field in 1971 (probably because it was stolen at the time). Found in the 90s it was then subjected to a complete restoration replacing the engine (the original one was no longer in the car).
In 1995 the car was re-registered with the addition of a new chassis number (so now the car has two numbers) and registered as an SVZ, in 2001 the car disappeared from the radar again to reappear only now, probably because it was stored for a long time (hence the dust). The price? On request, of course. Find it for sale here in Sint-Truiden, Belgium.