ALFONSO XIII - BABY HEAD stamps of the PHILIPPINES
Details
11 June 1896
Palmer (1912) reports that A Royal Decree of 11 June 1896 provided that, begining with the next issue of stamps, there should be a uniform type of stamps for Cuba, Porto Rico, and the Philippines.
Exact details of the Royal Decree are not currently known, but a new design of stamps was issued in 1898.
see also the Royal Decree of 8 October 1897