First of all, it's prudent that you don't post the entire serial number for obvious reasons. You would do it like this, 476XXX. Secondly, It's hard to say what it's worth. We don't know about the condition of the firearm or what options it has. I would assume it is in excellent condition with the 4 7/8 tapered barrel possibly around $200. Notation: With a 476XXX serial number, your Mark I or Standard pistol would have been produced in 1968. In 1961 the serial numbers ranged from 194XXX to 217XXX. Serial History, Manuals, and Parts Lists for your pistol can be found at the following link: http://www.ruger.com/Firearms/PS-SerialNumberHistory-PI.html#
50-175 or so
For pistol slow-fire, the proper target is the B16.
50-150 dollars
The Colt match target .22 with serial number 220044-S was made in 1966.
Call S&W and they will tell you.
75-185 USD
75 - 150 USD
value is based on overall condition, model and serial number........................
100-1000 USD depending on specifics.
try: edssportshop.com
50-300
Browning Challenger made in 1974. $300-$400.