Original space saver tire marked F78-15 from a 1970's Mercury or Ford. GoodYear brand it has the larger hub size, bolt pattern is 5 on 4-1/2. Not sure if it has ever been inflated, it is collapsed as shown. Just looking for a space saver spare? This is it, it looks the part to those that casually look in the trunk of the car at a car show. Tread is period correct for a Goodyear tire, but typically B.F. Goodrich was optional on 1968-69 Cougar or Mustang.
*NOTE* Does not include inflator bottle and valve caps are usually missing.