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  2. Postage stamp problem - Wikipedia

    en.wikipedia.org/wiki/Postage_stamp_problem

    [2] For example, suppose the envelope can hold only three stamps, and the available stamp values are 1 cent, 2 cents, 5 cents, and 20 cents. Then the solution is 13 cents; since any smaller value can be obtained with at most three stamps (e.g. 4 = 2 + 2, 8 = 5 + 2 + 1, etc.), but to get 13 cents one must use at least four stamps.

  3. Two envelopes problem - Wikipedia

    en.wikipedia.org/wiki/Two_envelopes_problem

    In that case the other envelope contains a/2 with probability 3/5 and 2a with probability 2/5. So either the first envelope contains 1, in which case the conditional expected amount in the other envelope is 2, or the first envelope contains a > 1, and though the second envelope is more likely to be smaller than larger, its conditionally ...

  4. Postage stamps and postal history of the United States

    en.wikipedia.org/wiki/Postage_stamps_and_postal...

    The 5-cent stamp paid for a letter weighing less than 1/2 ounce and traveling up to 300 miles, the 10-cent stamp for deliveries to locations greater than 300 miles, or, twice the weight deliverable for the 5-cent stamp. Each stamp was hand engraved in what is believed to be steel, and laid out in sheets of 200 stamps.

  5. Wisconsin Territorial Centennial half dollar - Wikipedia

    en.wikipedia.org/wiki/Wisconsin_Territorial...

    Orders of one or two coins were sealed in tissue paper and shipped in envelopes that were either imprinted "L.M. HANKS, FIRST NATIONAL BANK BUILDING, MADISON, WISC" or rubber-stamped "AFTER 10 DAYS RETURN TO STATE SUPERINTENDENT, STATE CAPITOL, MADISON, WISC". Like the coins, envelopes are collectibles, valued at $50–$75. [37]

  6. Albany Charter half dollar - Wikipedia

    en.wikipedia.org/wiki/Albany_Charter_half_dollar

    [1] [2] Until 1954, the entire mintage of commemorative coin issues was sold by the government at face value to a group authorized by Congress, which then tried to sell the coins at a profit to the public. The new pieces then entered the secondary market; in early 1936 all earlier commemoratives sold at a premium to their issue prices.

  7. Envelope - Wikipedia

    en.wikipedia.org/wiki/Envelope

    A "return envelope" is a pre-addressed, smaller envelope included as the contents of a larger envelope and can be used for courtesy reply mail, metered reply mail, or freepost (business reply mail). Some envelopes are designed to be reused as the return envelope, saving the expense of including a return envelope in the contents of the original ...

  8. AOL Mail

    mail.aol.com

    Get AOL Mail for FREE! Manage your email like never before with travel, photo & document views. Personalize your inbox with themes & tabs. You've Got Mail!

  9. Proof coinage - Wikipedia

    en.wikipedia.org/wiki/Proof_coinage

    A 1969 United States Mint Proof set of 5 coins including 40% silver Kennedy half dollar. From 1950 to 1955, proof sets were packaged in a box and each of the five coins was sealed in a cellophane bag. 1955 saw both the original "box" packaging and introduced the flat-pack, where the coins were sealed in cellophane and presented in an envelope ...

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