New reproduction wiper knob for the 71-73 Mustang, but makes an excellent replacement for the 73-77 Maverick/Comet (will also fit '72). Available at Melvin's Classic Ford Parts. http://www.parts123.com/parts123/yb...~S4Z10O5GNL10870122635a~Z5Z5Z5~Z5Z5Z50001018o
The wiper knob pictured above was used on the 71-73 Mustangs built after 5/3/71. There is also a new reproduction wiper knob made for the early 71 (prior to 5/3/71) which may appeal to some of the 70-71 Maverick owners since it too is also round