Schermack Type III - Perforated Control Marks Collection, of 40 stamps and 4 covers; stamps including various company perfins with rare items including pattern # 14, 49, 14689, etc., the 12 hole experimental used by Schermack, 3¢ Wash-Frank use (19), on corner card cover usages from Burlington Watch Co., illustrated Hungerford Brass & Copper Co. and 1¢ & 2¢ usages from Cos3711mopolitan Magazine. Estimate  $500 - 750. $0