You would have to try hard to be more generic. Does it have the box? If so, what shape is it in. Does it have all the original papers? If so, what condition are they in? What caliber is it? 45, 38 super? What is the finish? Blue, nickel, two tone? Any engraving? If so, is it factory or after market? If after market is it by a well known engraver? What are the grips made of? Wood, ivory, ebony, exotic wood? Factory or after market? What is the overall condition? How many rounds through it? Does it come with any accessories like a case, extra magazines, ammunition, etc.. All affect the "value".
your colt mark IV series 70 national match was made in 1972.
value depends on overall condition..............
50-850
You will have to call Colt to find out.
500-700 USD
Call Colt
You will have to call Colt to find out.
Don't know value, but Colt national match .45 with that serial number was made in 1969.
You will have to call Colt to find out.
100-800 usd
The Colt 45ACP National Match with serial number 17235-NM was manufactured in 1969.
100-4000 usd