value depends on overall condition.....................
The Lawman mk III Colt 357 mag is valued at $1,000 in excellent condition. Good condition value is $800.
value depends on overall condition..................
50-500 usd
100-300 USD depending on condition
Period from about 1969 to 1983
Proofhouse.com has Colt sn data.
@1976
It was produced in 1971,
1976
I just put a Lawman Mk. III on layaway at a local gun shop. It was selling for $650, but the guy gave it to me for $599. It's in great condition, as far as I can tell.
What you have is a Colt Mark III series Lawman in 357 magnum that dates to 1969. Value depends on other things also. Do you have the box, manual, papers that came with it? What barrel length? What is the finish (blue or nickel)? A very broad range would be 250-600.