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Like other coins, the value of errors is based in part on rarity and condition. In general, lower denomination errors are less expensive than higher denomination errors simply because more such coins are minted resulting in available errors. Due to improvements in production and inspection, modern errors are more rare and this impacts value. [3]
Stamps sell at a considerable premium if they are in this condition. Lightly hinged (LH) is a mint stamp which was hinged but only slightly disturbed. Heavily hinged (HH) is a mint stamp which was hinged and damaged in the process. Hinge remaining (HR) is a mint stamp which has part of a stamp hinge on the back.
The postage stamp problem (also called the Frobenius Coin Problem and the Chicken McNugget Theorem [1]) is a mathematical riddle that asks what is the smallest postage value which cannot be placed on an envelope, if the latter can hold only a limited number of stamps, and these may only have certain specified face values.
Estimated value: Up to $3,000 Part of the U.S. Mint’s State Quarters program, the 2004 Wisconsin quarter was issued to celebrate the state’s heritage and features an image of a cow, cheese ...
For informal letters, follow the same format as the sender's address. If sending a letter to someone at a specific business, the first line should be the company's name. In the next line, follow ...
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A postal marking is any kind of annotation applied to a letter by a postal service. The most common types are postmarks and cancellations ; almost every letter will have those. Less common types include forwarding addresses, routing annotations, warnings, postage due notices and explanations, such as for damaged or delayed mail, and censored or ...
Mint stamps are often more valuable than used stamps as in many cases fewer mint stamps survive. A mint stamp may also be in better condition than a used stamp which has passed through the mail. Sometimes, however, used stamps may be more valuable than mint ones where higher numbers of mint stamps have survived, perhaps because large numbers of ...