September 20, 1950
1948 Dr Jose Rizal Definitive Surcharged with 'O.B.'
1-Centavo on 2-Centavos Emerald-Green

Base Stamp Engraved by the American Bank Note Company, USA
Surcharged by the Philippine Bureau of Printing
Printed in Sheets of 400, Separated into Four Post Office Panes of 100 Subjects (10 x 10)
Plate Number: 1-20438 and 2-20438
Printed on Unwatermarked Paper
Perforation: 12
Quantity: 8,000,000

Overprint Shifted Left
Causing the Denomination '2' on the Right to be Unobliterated

O56a
(From the Collection of Dr Ngo)