W. Park's patent driving cleek, so stamped on the back of its blade, has a low profile face and a distinctly rounded back. This was done to concentrate the weight directly behind the ball, just opposite the spot where the ball would be struck. Because the club was meant to drive with in certain instances, it has little loft and a 38 1/2" length, which would become the standard length for a 2 iron for many decades during the 20th century.  

Park never actually received a patent for this club, but the auctioneer suspects he applied for it on July 9, 1890. At That time he applied for a British patent (10575) to cover "metal golf clubs"; he later abandoned this application.  This makes even more sense given that Park applied for a patent on his lofter just over a year earlier, on March 23, 1889. That club met with a bit of success, so why not come back and patent another iron? Of course! But what more than a few early clubmakers figured out was this: 

If they simply applied for the patent, they were issued a patent application number which would become the actual patent number when the patent was completed. So they would just use the number or acknowledge the patent on their special club but never actually spend the money to complete the application. Nodody else would be issued that number in the year the application was taken out.  Plus the competition was not given to looking up the patent to see if one was actually issued. Besides, many patented golf clubs turned out to be money losers for the patent owners. 

This club has what appeares to be its original and sheepskin grip. Overall, this is a very nice club made by the 1887 and 1889 British Open champion.