"Pennsylvania Oxford" (12-ball tennis ball can)

Unopened twelve-ball tennis ball can with a flat lid and the key attached to the side. The can has a pale purple paper label with purple lettering.

This can was purchased by the donor shortly before World War II broke out upon hearing that there would be shortages of rubber and other materials used for tennis balls. The donor never got around to opening the can, and in the 1970s, sent it to the Pennsylvania Rubber Company, who was able to research it and determine that the can was packaged in December 1939, and was a brand they sold between 1938 and 1941.