Hong Kong, 1948, $10 Silver Wedding, used with 1946, 30c light ultra and $1 deep orange & green, latter block of four, one stamp pre-use tear, tied by "Registered, G.P.O., 18 MR '49" cds on registered cover to Messrs. The Upjohn Company at Kalamazoo, Mich., Hong Kong registry label; New York (3.26) and Kalamazoo (3.28) backstamps; Fine and rare high value use. SG No. 172. Scott No. 179 + 161B + 163B  Estimate $400 - 600. $0 (Image)