Wing Sung 601 (Teal Blue)
The famous Parker 51 has been widely copied and cloned by Chinese companies and this model by Wing Sung is one of the better quality ones. It features an ink window which the 51 never had. It also features the vacuumatic filling mechanism which was used in early 51s before the simpler aerometric filler was adopted.
This example has a fine nib and writes well.
