the serial number is needed for the manufactured date
Do you have a colt python?
That Colt python was made in 1969.
I could only find that it was introduced in 1980
Your colt python was made in 1961.
That Colt python was produced in 1981.
That Colt python was made in 1975.
Your colt python was made in 1975.
100-1000 USD or so depending on specifics
A Colt Python serial number 35128e was manufactured about 1964
You will have to call Colt to find out.
You must call Colt.
You must call Colt to find out.