Nancy, thank you. With the help of google I finally got the info too. Yes, a 15 with 50,000 allotted in 1906, manufactered in NJ. I don't know how many 15s with the sphinx are around. I did see 1 referenced/sold when I did my google search. I didn't put on the plate for the picture, but I have it and some other attachements, parts. It needs to be cleaned up, rust removed, new belt, and I don't know what else. It has a 3 drawer stand, which I have fixed up, but one of the drawers has fallen apart. I live so far out in the middle of no-where I'm not sure I it'll get repaired soon. I did talk to a quilt shop owner who has fixed some up and has agreed to look at mine. But, she is over an hour away and I don't have to go to that town for awhile. Anyway, any idea on value anyone?