Maybe you'll know Rich.. I bought this today because it was in pretty good shape and I liked the size of it, a midsized office machine, not a big monster. All it says is Royal and I can't find a model #. There is patent numbers the last being 1949. It has some "modern" cool features like magic margins and what I found most interesting was the two tab buttons on the right hand of the keyboard almost like an electrics carriage return. One of the buttons is extra long so you sort of use the edge of your hand or full pinky finger to press it.