July 4, 1949
1947 Mayon Volcano Definitive Overprinted 'O.B.'
20-Centavos Reddish Brown

Base Stamp Engraved by the American Bank Note Company, USA
Overprinted by the Philippine Bureau of Printing or American Bank Note Company
Printed in Sheets of 400, Separated into Four Post Office Panes of 100 Subjects (10 x 10)
Plate Numbers: 1-20313
Printed on Unwatermarked Paper
Perforation: 12
Quantity: 4,500,000
1^st and 2^nd Pritings - 2,500,000 (Philippine Bureau of Printing)
3^rd Printing - 2,000,000 (American Bank Note Company)

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