(Medical - Equipment) Chas. Lentz & Sons, Manufacturers of Surgical Instruments, illustrated designs in blue on reverse of cover showing Hypodermic Syringe & Obstetrical Bag, franked with 2¢ carmine tied by 1895 Philadelphia, Pa. machine postmark, light cover edge tone at top, otherwise Very Fine. Estimate  $75 - 100. $0 (Image)