Giovanni Viafora's (Cosenza: 1870 - New York: 15 Jun 1930) caricatures, produced in 1906-07 are rare and should rightly command a high price. The most expensive personality in the set is the caricature of Oscar Hammerstein I, impresario of the Manhattan Opera House, valued for its Judaic association. I've seen this postcard for sale in the $300 range. The second most important postcard in this set is the caricature of Enrico Caruso. The featured personalities all had some association with either the Manhattan Opera or the Metropolitan Opera during the time of the printing of these cards. Note: Viafora's caricatures aren't as original as they might appear. In the case of the caricature of Josephine Jacoby, Viafora's drawing is taken directly from an existing photograph of the contralto as Siebel.Viafora also created a series of prints featuring musicians, composers and conductors called the “Musical America’s Gallery of Celebrities.” These prints were usually small, measuring between 5 and 7 inches high. They were not postcards, and this series of trade prints were published after the Viafora postcards sometime in the late 1910s and early 1920s.To the left we have the composer, Humperdinck.