948 SS (1947) With 3139a + 3140a (1997) POSTAL CENTENARY AT 100 & 150 YEARS ! 

An Historic - STEPHEN ANDERSON FDC - One of the MOST Collected Cachet Makers 

FDOI May 20, 1947 - Washington, D. C. ---- 2nd Day Honors 100th Year of U S Postage  

FDOI May 29-30, 1997 - San Francisco, California -- Honors 150th Year of U S Postage  

Unaddressed - Unsealed - Great Condition for Age -- Likely OOAK -&- Super SCARCE 

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(B1-2)