1951, Birth Centenary of Pierre Savorgnan de Brazza, group of
specialities: four imperforate colour proofs, and epreuve d'artiste
in black
1951, Birth Centenary of Pierre Savorgnan de Brazza, group of
specialities: four imperforate colour proofs, and epreuve d'artiste
in black with signature Hertenberger. Maury 232. (T)
