For sale are three sets of grips: 2 sets of Ruger Blackhawk walnut grips and one set of Herrett's grips. The Herrett's look to be for a square butt N-frame. Label on the inside of the back panel indicates: "A Genuine Herrett's Model RCIII"
As you can see from the photo's, the checked set of Blackhawk grips has an "extra" hole for reasons I cannot comprehend. I'm throwing these in with the price of the walnut set.
Ruger grips: $35 for both shipped (OBO)***SPF***
Herrett's: $50 shipped. (OBO)