Austrian composer (1885–1935) who produced compositions that combined Mahlerian Romanticism with a personal adaptation of Schoenberg's twelve-tone technique. ANS in German, unsigned, on the reverse of Berg’s 4 x 2.5 personal calling card, no date. In full (translated): “Thank you, dear professor very much for your very dear congratulatory words and greetings to you & your loved ones sincerely (also on behalf of my wife).” In fine condition. RR Auction COA.