I only have one 19th century bat but thought this 20th century bat was quite a novelty. It's called the Pneumatico and was made in York,PA. The company made their bats by boring out the center of the bat from top to bottom but leaving about 2-3 inches in the middle. They then filled the ends. Their selling point was you could hit a ball 25 percent farther and the bat was stronger and lighter than bats of similar size. I guess this was the first corked bat.I have an advertisement from the company but had a difficult time getting a clear shot as it's in a fragile publication. Clint