unused Block of Four 1/8c-20c Black Proprietary Revenues (betw. RB39-RB64), unused blocks of four, 22 different items incl. nos. RB39 and complete set of nos. RB44-RB64, all o.g., h.r., most B. pairs never hinged, one 1½c and one 10c stamp faulty, otherwise very good-fine lot, Scott retail $1,063.70