Lot of three from 1942 promotional campaign for Diamond D-X service stations/Mid-Continent Petroleum Corp. First is 4.5x6" two-sided card. Top half is member's club card and bottom half is sponsor's pledge. You were to fill out the card and return it to become a member. The card was to be cut in half w/the top going to member and bottom going to service station for their records. Both halves have designated numbers for the 16 "Dumbo Weekly" issues and cards were to be punched upon receipt of each issue. Card is unused. Tanned w/age but clean and Exc., rare especially as unused. Next is 1.25” dia. club button. Complete w/Kay Kamen backpaper featuring Mickey image. Exc. Final item is 9.5x12” die-cut stiff paper mask. Dumbo wears headdress marked “D-X.” Blank reverse tanned but front is bright and clean. Exc. See weekly issues near set item #2451.