This issue was announced by the USPS on December 13^th:

The bold artwork on a skateboard deck is often as eye-catching and individualistic as a skater’s most breathtaking moves. These four stamps celebrate the Art of the Skateboard with vibrant designs that capture skateboarding’s excitement. Art director Antonio Alcalá designed the stamp issuance using photographs of skateboards created by artist Crystal Worl, an Alaskan whose blue and indigo salmon formline design expresses her Tlingit/Athabascan heritage; self-taught artist William James Taylor Jr. of Virginia, who created an energetic red and orange graphic abstraction; Di’Orr Greenwood of Arizona who represents her Navajo culture with a turquoise-inlaid skateboard that features eagle feathers and colors of the rising or setting sun and Colombian-born, Washington, DC-raised muralist MazPaz (Federico Frum), who painted a stylized jaguar.