Looks to be a Sears Spaceliner built by Murray of Ohio. Missing some pieces but has the cool chrome frame and rat trap fork. http://www.viktorschreckengost.org/Gall ... 6/110/1501
Value depends on location always but would probably be a good deal in upto $125.00
not sure what size it is ...i went lookin 4 the kid that has it 2day to get it ..didnt find him ill get it though !! ill prolly clean the crome and sell it when i do get it ..mayb? i need cash 2 fund another build !!!