This is a Conklin Nozac V-Line piston filler in Nile Green in the longer rounded size, c1937. The V-Line Nozac has a single color herringbone pattern in Royal Blue, Burgundy, Pearl, Black, and Nile Green. The rounded V-Line pens came in two sizes, a long and short length and featured sections in the same material as the cap and barrel. The 1936 Conklin clip and the single wide cap band are gold plated. The V pattern alternates direction with each stripe. Both rounded pens sold for $5.00, and matching twist action pencils were $3.50. This one is 5 inches long. Conklin offered 14 karat gold Cushon Point nibs with the Conklin Crescent logo or circle stamping with platinum plating in the circle. Nib grades offered were extra fine, fine, medium, coarse, stub medium, stub broad, left oblique, two way and Recorder in extra fine, fine and medium.