500-700 USD
the 'C' series is a commercial model, not military. if an early model marked national match on slide high value (depending on condition) if original rear adjustable sights, worth more. if not marked National Match on slide, little less value. Again, all depends on condition.
value depends on overall condition..............
your colt gold cup national match would be worth between 650 dollars at 70% condition to 1,000 dollars at 90% condition.
100-800 usd
A few hundred to multiple thousands of USD depeding on exact configuration, age, overall condition and accessories.
your colt mark IV series 70 national match was made in 1972.
Did Colt ever make a gold cup national match series 70 in a two tone
The Colt 45ACP National Match with serial number 17235-NM was manufactured in 1969.
You will have to call Colt to find out.
100-1000 USD
What is the value of: Colt Gold Cup, National Match, 70 series, Original Box and Manual, good to excellent condition,
You will have to call Colt to find out.