Stamped "Arlington 'Pyralin' Pat Appl'd For" on its crown, the head on this driver is made from white Pyralin, a type of vulcanized rubber. Clubs made with Pyralin heads occurred through the efforts of Willie Dunn Jr., who received a 1903 US patent that was behind the club offered here. Dunn assigned his patent to the Kempshall Manufacturing Company of Arlington, New Jersey, the company who made this driver.

A review of Dunn's pyralin clubs was published in the April 1904 issue of Golf (NY), which reads in part:

"[Willie Dunn's] rubber-headed club drives a very long ball, and works equally well with gutta-percha and rubber-cored balls.  The head is beautifully proportioned, impervious to wet and virtually indestructible.  It would seem as though the new club were especially adapted to the needs of players who really prefer using the solid ball, but who cannot afford to give distance on every tee to their proponents of the rubber-cored tribe. The club will be on the market shortly."

The head is actually a few pieces of pyralin laminated together, and the laminations can be seen running parallel with each other at the toe and across the back of the head as shown in the images. 

Pyralin putters are around, but pyralin drivers?  Nope, they are particularly rare. And white pyralin drivers?  This is the only one the auctioneer has ever seen, and it is stunning!

42 3/4" original shaft painted original black paint.  Original sheepskin grip.  Club shows little to no use. The only flaw is on the back of the neck where a short hairline crack extends just below the whipping. Unless looking for it, it is not noticable.

See TCA2 v1 p381 and v2 p518 for more on Dunn's rubber headed clubs.