MISSING PERIOD UNDER "O" of  "PO" VARIETY

On White Paper: Position 1 of Block of 4 and Single (Enlarged)
On Rose Paper: Position 3 of Block of 4
Single Weight Overseas Postal Rate

1867 MAY 1: MANILA to SEVILLE, SPAIN
With Parilla and Circular Dotted Cancellations and MANILA - * 
Date Stamp on the Side