Panama-Pacific

This series of postage stamps, issued to commemorate the opening of the Panama Canal and the discovery of the Pacific Ocean, comprises four denominations, 1, 2, 5, and 10 cents, all of which were first placed on sale at San Francisco, Calif., January 1, 1913, except the 2-cent denomination, which was first placed on sale at the same post office on January 18, 1913.

The stamps are about 3/4 of an inch high by 1 1/16 inches wide; at the top appear the words “U. S. Postage” and “San Francisco, 1915”; in the left-hand border is a branch of laurel and in the right-hand border a palm branch; a numeral expressing the denomination is shown within a circle in each lower corner, with the word “Cents” between.

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