In addition to the .38-40/10mm convertible, Buckeye Sports also had Ruger do a run of .32 H&R Magnum/.32-20. I believe 5,000 of each model were manufactured; however, the .32 version is seldom seen. The 38-40 models languished in the stores and were offered for extremely low prices after a while. Both models have a buckeye embossed into the top strap.
I have owned three different samples of the .38-40/10mm, and all of them were awesome shooters, especially with the .38-40 cylinder. I am still looking for the .32 caliber version.