Looks like an early 70's Ruttman Spyder ... It was originally a 6" wheel bike ... Still small ,but there are smaller out there ... If the frame isn't hacked on and it's clean 75 is reasonable ... Need some better pics ... OK ... Now I see the first pic ... It didn't come up when I first opened the thread ... The seat mount has been cut off along with the rear fender bracket :doah:... I don't know ... Wonder what else has been hacked on ... I may not give that for it ...