Welcome! Limited edition models used to be made just about every year by H&R in Gardner, but since Remington bought H&R/Marlin and moved production to Ilion NY, I don't think they've made any more, Talo has, but that's the only models I've seen so far. Unfortunately, any info on those limited edition firearms disappeared with the staff in Gardner, maybe someone is familiar with the TII + and will offer more info. You can tell when it was made by the serial number prefix letters on the frame, there's a list of build year codes in the FAQs and Help sticky, the best place for newbies to spend lots of time reading.
The Tracker II normally comes on an SB1 shotgun frame, the 45-70 BC comes on an SB2 rifle frame, the only rifle barrels that can be fitted to an SB1 frame made 1987 or later would be 357 and 44 mag.
Tim
