1851-1879 G.B. - U.S. Mails, group of 26 stamped covers from Great Britain, various rates and markings including insufficiently stamped, mostly pre-UPU usages, better includes 1875 use with preprinted address to New Mexico Terr., a few mourning covers like 1875 bearing 1d strip of three to HMS Petrel in San Francisco, etc.; some faults, F.-V.F. Estimate  $500 - 750. $0 (Image)