A mid-century converter fountain pen by Conklin Pen Co., Ohio. Black and orange body, black cap with golden details and nib. Hallmark Conklin Toledo is on the nib. Hallmark Conklin Pat. 5-28-1918 is on the pin. Hallmark US Pats. 1902809-10-11 is on the body. Collectible Luxury Writing Instruments And Desk Accessories.