1992 Minerals Plate Block of 4 29c Postage Stamps - MNH, OG - Sc# 2700-2703
Four minerals - azurite, copper, variscite, and wulfenite - were unearthed by the Postal Service to be featured on this set of stamps. Azurite, named so because of its beautiful azure-blue color, and variscite, a semi-precious gemstone, are chiefly used in jewelry and other ornamental pieces. Copper has been one of man's most useful metals for almost 5,000 years. In ancient times, the chief source of copper was found on the island of Cyprus, and it came to be known as Cyprian metal. Today, our name and symbol (Cu) for copper come from the word "cuprum" - the Roman name for Cyprian metal. Wulfenite is found in great quantities near Eastern Europe and South America. This yellow-orange mineral forms a crystallized structure, giving it a jagged appearance.
These are real USPS postage stamps that are accepted by the USA Postal Service as payment for mail posted in the USA however the total rates on the stamps posted must equal or exceed the current appropriate postal mailing rate or extra postage must be paid.
The stamp set shown in the picture is a stock photo and is likely not a picture of the exact stamp set you will receive in that it may differ in plate number and/or orientation. However the item you will receive will be similar including having a plate number (if one is present in the photos) and the same number of stamps. Stamps titled as MNH, OG will have no significant creases or unnatural gum disturbances unless otherwise noted.