1920s Parker Lucky Curve in black hard rubber. This pen is virtually identical to a Duofold Senior but carries no Duofold imprint and has the slightly domed captop of the pre: Duo pens. The nib, which appears to be original, is a highly flexible Lucky Curve about a 4 size, with a heart hole in fine/medium. A curious pen of interest to those who like the unusual. $275 (flex)