Martial Arts Celebration Boy postage stamps for mailing your party invitations. Each sheet contains twenty first class postage stamps featuring the Martial Arts Celebration Boy and the word Party! Each with a face value of $0.42. Use for your Martial Arts event invitations and thank you cards. These stamps are approved for first-class, one-ounce domestic mailing witihn the U.S. by the U.S. Postal Service.  Custom postage must be ordered through supplier link below, our checkout system on this site can not process orders for postage stamps.