This is a Welsharp tiny fountain pen in green marble c. late 1930s. The Welsh Manufacturing Company made pens and pencils under the Welsharp name in the 1930s and when it applied for a trademark around 1938, The Wahl Company, makers of Wahl and Eversharp pens and pencils, successfully opposed this use in a 1940 decision. This is not surprising especially since this particular line would compete with The Wahl Company's line of 3 3/4 inch long Bantam pens, made from about 1933 to 1940. The Salz Brothers pen company had been making the 3 inch long Peter Pan pens since about 1916 and continued until at least 1943. This very small 3 11/16 inch long pen dates to the late 1930s. They came in a variety of colors including solid cream, yellow, and green and marbled green, red, red and black and pink. It features a black stepped cap top and barrel end cap and a 14 karat gold plated stainless steel nib. The nib has no tipping, relying instead on a punched or pressed dimple in the end of the tines to act as the point.