UN Vienna stamp collection No. Yvert and Tellier 137/138 Mint never hinged

Stamp collection UN Vienna No. Yvert and Tellier 137/138 Mint without hinge: Treasure of the World Heritage. Tribute to the efforts of U.N.E.S.C.O. La Maison du Collectionneur would like to suggest this album which will allow you to store and preserve your precious acquisitions.