(Medical) J. Ellwood Lee Co., Manufacturers and Importers of Surgical Instruments, Physicians Supplies. Wonderful multicolor all over design on 1896 cover to Costa Rica franked with 1890 5¢ brown (tiny perf defect) cancelled by cork cancel with "Conshohocken, Pa." cds at left, attractive illustrated ad on reverse showing Company logo, "Port Limon" arrival double circle postmark on front, Extremely Fine, a classic ad cover to a great destination. Estimate  $150 - 200. $0 (Image)