This pen decorated with gold patterns on a black lacquered body has many siblings in different color and patterns. Those pens also bears the name Lady Sheaffer, whereas the number code changes according to the colors and patterns.
Lady Sheaffer has a tiny 14k gold nib which is referred as a recessed nib. It has a unique, upside looking shape.
Most probably the pen I have is a fine and so it writes quite fine. What do you think about the male and female segregation on the fountain pens?