Navy Dept., 1873, 3¢ Navy + 12¢ Navy, bright shades, tied by "Philadelphia Pa. Oct. 8 6PM" duplex with split cork cancel on legal-size cover to Major Thomas Y. Field, U.S. Marines, "Island House", Atlantic City N.J.; slightly reduced at left, 12¢ slightly rounded corner perf, Very Fine, ex-Hughes. Scott No. O37, O41  Estimate $4,000 - 6,000. ONE OF FIVE RECORDED COVERS BEARING THE 12¢ NAVY DEPARTMENT STAMP, THE ONLY RECORDED COMBINATION OF THESE VALUES. The five recorded covers comprising: two solo 12¢ usages, two 12¢, 30¢ combination frankings to Brazil from the Commodore Caldwell correspondence, and the cover offered here. $0 (Image)