Smith and Wesson Model 1
Yes, Winchester did create a prototype .22 caliber revolver, known as the Winchester Model 1890, which was primarily a rifle. While the company is more famous for its rifles, there were experimental revolvers developed in the early 20th century, but none went into full production. These prototypes are rare and of interest to collectors, but Winchester is not widely known for .22 caliber revolvers.
22-72
S&w
All of them have a sn.
A .22 caliber Iver-Johnson Cadet revolver.
300-500
Impossible to answer without knowing who made it.
Best left to a gunsmith.
l Blue Book of Gun values
25-50 USD
No such S&W model number.
Sauer, Schmidt, Rohm