Welcome to the forum. Sorry to hear about your friend.
Sounds like a K frame revolver probably built in 1971-1972
We would need more details, barrel length (measured from the front of the cylinder to the muzzle), fixed or adjustable sights, Blue or Nickle
Open up the cylinder and look on the frame for a MOD- 10, 12, 13,thru 15.
There should also be what is referred to as the dash number... ex.. Mod 15-5 etc.
Some pictures or at least a good evaluation of the condition would be helpful.
A beater might go for $250, Depending on the model and condition a pristine specimen could go for up to $500.