(a) Spark Plug. Material: porcelain, metal. Size: 3" L. Description: porcelain cylinder - metal cap on each end - two metal rings on one end - printed on side: "Pat 7-1-19 9-14-20 Perron Oil proof A-"775"-A #1." (b) Box. Material: paper. Size: 1" W. x 3 1/2" H. Description: yellowed cardboard - flip top opening - printed on front: "The Perron A-775-A Tractor Automobile Mf'd by The Perron Co. Sparta, Wis." - printed on side: "Caution do not replace porcelains without using new gaskets. See that point is in line with opening when assembling. Adjust spark gap after plug is assembled." - printed on second side: "We guarantee These porcelains to be genuine A-775-A, and are the best that money can buy. Pat July 1, 1919." - printed on third side: "Do not screw bushing down too tight, as this will cause the porcelain to crack when heated. The Perron Co. Sparta, Wis." - printed on bottom: "For all 15-16 Shells Automobile and Tractor Price $.60."
