Depending on condition, paperwork, box and grips, between $1,500-$2,500.00
The Colt Python 357 Magnum that is chrome plated and has a four serial number costs between 700 and 900 dollars.
100-5000 USD depending on specifics
100-500 depending on condition and if it left the factory the way you describe.
between $950 - $1250 between $950 - $1250
The Nickel plated jewelry can be cleaned in a vinegar solution or mixture. Steel wool can also be used to clean the nickel plated jewelry.