Registered cover was posted right after the declaration of the Spanish American War.

Franked with a pair of the 3c and single  of 5c Spanish Philippines definitives,
tied by boxed "Certificado" handstamps. With blue CORREOS FILIPINAS  30 (Manila)
origin postmark and the octagonal  Ligne N Paq Fr No. 1 Apr 30 1898 French mail steamer
transit marking on the face; backstamped Vienna May 21.
Re-directed to BUDAPEST, HUNGARY upon arrival.