PHOTO COURTESY OF H. OBERNAUER & CO. By all accounts, Herman Obernauer was one hell of a guy. After immigrating to Pittsburgh from Germany in 1880, he became a horseback-riding cigar salesman who galloped from pub to pub selling his wares. Locals dubbed this speed demon “The Flying Dutchman.” When he realized customers were drinking three glasses of whiskey for every stogie they bought, he landed in the booze business. H. Obernauer & Co. was a w…