Philip Spiro was head of the printing firm Spiro Brothers based in Hamburg, Germany. During the 1860s and 1870s, he manufactured lithographic facsimiles of postage stamps from a wide range of countries, generally printed in sheets of 25 (5 x 5) stamps.
Most old-time collections are likely to contain at least one or two examples of Spiro's work. Examples of his forgeries of the Japan 1872-75 'Cherry Blossom' series can often be found as single stamps, on old album pages. Surviving intact complete sheets of 25 stamps are much scarcer.