Raw eggs keep a lot longer. Interestingly, hard-boiled eggs do not keep nearly as long as raw eggs, which can last three to five weeks in the refrigerator. There is a good reason for this. When a hen lays an egg, it puts a naturally protective coating on the outside of the shell.
As of June 2014, the United States Postal Service states that the cost to send a standard sized postcard is 34 cents. At this rate, the postcard can be 6 inches long, 4 1/4 inches high and 0.16 inches thick.
If you really want the postcards to arrive quickly, it will cost few pennies more, but putting it in an envelope and sending a first class letter, assures quick delivery from anywhere in the world. First class letter - 3-7 days. postcard - 7-14 days-sometimes never.USNR, e-mail is just not the same.f you really want the postcards to arrive quickly, it will cost few pennies more, but putting it in an envelope and sending a first class letter, assures quick delivery from anywhere in the world. First class letter - 3-7 days. postcard - 7-14 days-sometimes never.