So I'm rather confused. I have had this model 60sp for a few years now, I picked it up in a trade. Needless to say I wasn't in the market at the time as I had a brand new 10/22 that I thought I loved. Sold the 10/22 shortly after and have been in love with the marlin. I just recently decided to do a little research to see what I had. It has a 'American Heritage 1991' medallion on the side. I have not seen another around. All the ones I find around the web are from 1992. This one also has a 22" barrel and a 18 round full length tube. All my research has told me that they stopped making the 18 round tube models in the 80's. Any one have any idea if this is an odd variant or if I'm just out of the loop. Thanks for your help!