1950s. Although 9" long tin litho Japanese truck by Bandai is occasionally seen, this 5.5x8.25" unpunched premium card is first we've seen. Card is titled "Mobilgas Tank Truck Purchase Card" with photo of toy truck and text at left titled "Hey, Kids!" with text explaining how kids should get Mom or Dad to "Drive Into Our Station Today And Fill Up With Mobilgas "R" Or Mobilgas Special. Every Time They Purchase Five Gallons We Will Mark Off One Of The 5-Gallons Squares Shown On Purchase Card In Upper Right Corner." When all squares representing forty gallons have been marked "This Scale Model Mobilgas Tank Truck Will Be Yours Absolutely Free." Truck is missing rubber hose as well as chain that hung from rear bumper. Drive wheels have hardened with some stress lines and plated areas have dulled. Scattered lt. scratches. VG overall. Card has faint crease at lower right corner tip, otherwise unused and Exc.