Unless a factory experimental exists, none.
Many have, primarily Colt.
One of many models made by Colt
Impossible to answer. Only Colt knows.
Only Colt knows
The Colt Python is a .357 Magnum caliber revolver. The gun was first introduced in 1955 but production of the gun stopped around 1996 due to many legal issues.
2720
600
@9,500
No one but Colt knows and they aren't telling.
Only Remington knows.
Yes, but there is many copies made throughout the world.
Only Colt knows, and they might not even know to the last one.