This auction is for 7 FoMoCo script sparkplug wrench marked USA -M-01A 17017B.These wrenches were issued with the 1950,1951 and 1952 8N Ford Tractors and Ford V-8 cars.The last number on the wrench is a version number ie: numbers in the 70's are for 1950 Model year,80's for 1951 Model year,90's for 1952 Model year.Of these 7 wrenches there are 4 wrenches for the 1950 year,1 wrench for the 1951 year and 2 wrenches for the 1952 year.(one is chrome plated) Wrenches are in good condition and are ready to use or show.