Complete set of the 5 First Day of Issue stamps issued to commemorate 50 years of NATO worldwide service. Stamps are displayed on souvenir cardstock and feature images of various NATO operations in Belgium. Page one: Fighter Jets in Formation in air, F912 Ship on water, M1 Abrams Tank on land. Page two: Field Hospital and Briefing Room. Souvenir set. See photos and zoom in for details. Stored and shipped in a protective display sheet for easy inclusion into your collection album.