There is a 2101, not sure of the difference, but it is very minor. There are a fair number of very closely related saws, and many of the parts interchange. The 1100, 298, 280, 380, 480, and the 285 (I may have forgotten one or two). There are some differences in ignition and the 80 cc saws have a smaller diameter crankshaft. I'm sure there are lots of other differences but they are all based on the same saw. Heavy, torquey, durable..... great for milling but WAY too much saw for basic firewood cutting unless you are linebacker size and/or are too stubborn to buy a modern saw. Mine does milling duty with an Alaskan. Have fun with it, they are fairly highly prized by those who own them.