J. W. Gregory Esqre./Express Office. Address on stampless cover intended for "Mr. or Mrs. George Liddell" in San Francisco, probably of eastern origin, "Not Paid" straight line handstamp at left (with the "D" touched up in ink matching that of the address), small corner stain, Very Fine, an interesting usage, one of the least seen of all of the Gregory's Express markings. Estimate  $150 - 200. $0 (Image)