Yes it is on the Puma also, obviously they haven't been around for 100 years so I dont what its for, haven't had a chance to ask my local ebonite staffer.
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Of course, Ebonite has not been making bowling balls for 100 years. They were a chemical company. Ebonite is not really a proper name; it is the name of a "thing". The dictionary defines "ebonite" as "a hard nonresilient rubber formed by vulcanizing natural rubber". When the process was discovered, the company was probably formed to take advatange of the product. Ebonite is used to make pens and electricla insulation (at least, at one point in time), among other things.

Also, see
http://en.wikipedia.org/wiki/Ebonite
"Ebonite is one of the earliest forms of plastic. A hard, rigid and shiny resin, it was intended as an artificial substitute for ebony wood. It is actually a very hard rubber first obtained by Charles Goodyear by vulcanizing rubber for prolonged periods. As a result, it is about 30% to 40% sulfur."

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Bowling: Just like hand grenades and horse shoes, you only have to get close.
Life: Deal with what is.
CharlesT