Home Forums Lever Action Central Marlin 336 Lever Actions 336 RC 30-30 Help

So I was give all of my uncle's guns to sell, including a Marlin 336 30-30. I noticed the JM version is worth a bit more if its the same one I have in my possession. One recently sold on GB for $1075. Can someone school me on the JM version and do I have this more coveted model?? JM is on the hammer. Guy on the classifieds said this is the Model 336 RC. Slimmer style forearm. Would like to hear opinions on value as well. Its in pretty nice shape.