Well there aren't any RG revolvers worth much money. That being said I really like the ones in 38 Special , 32 S&W Long and the later fewer versions in 357.. if it's a blank firing starter pistol it's not worth a lot.Any idea on value? $125 is one price I saw.
The top break second pic you have looks like an old Smith and may have some decent value. I would like to have the one in the bottom pic even though I don't know what it is. But then again I'm into the lower end Evidence Cage type guns. I've had 3 RG snubs in the last 2 years.