Covered under a 1903 US patent issued to Willie Dunn Jr., this center-shafted putter head is made from Pyralin, a type of vulcanized rubber.  These putters were made mostly in black, but a few were made in white. This model is among the most difficult to locate as it has a black pyralin head with white pyralin inlays on the back, to cover the lead sunk inside the back of the head. 

There is no maker's name on this club. Most were made by Dunn's assignee, the Kempshall Mfg Co of Arlington.

This is a highly attractive club, complete with its original hickory shaft and sueded leather grip, in terrific original condition.