Used, divided back, color greeting post card titled "MANY HAPPY DAYS BE YOURS..." (see scans) mailed to Mr. C. E. Vitek, Glencoe, Oklahoma, posted using a one cent, Panama-Pacific Exposition issue, Scott #397, Vasco Nunez de Balboa stamp, tied to card by a SF15-23, BERKELEY, CAL., MAY 1, 1914, WORLD'S PANAMA-PACIFIC EXPOSITION IN SAN FRANCISCO, 1915, Universal Machine wavy bar slogan cancel, limited to Berkeley only and used during 1914 and 1915. Birthday card copyrighted 1910 by J. J. Marks, N.Y., as View #894-B, has creased/damaged corners. Check out other postal history items and post cards listed in my eBay Store. Foreign destinations will be charged $2.00 shipping which does not include tracking. Multiple lots combined, single p&h applied as long as paid per single invoice. Oklahoma residents subject to sales tax. [07/29/10]