This Stark solid gutta gercha golf ball was never used, and it looks gorgeous on display!
What appears to be a line around the equator is where the gutta percha "fin" created by the mold was trimmed off, but not perfectly flush with the rest of the ball. This "unrefined" element indicates this is an earlier named ball, circa 1890, which explains in part why the Stark is currently not recorded in any of the existing golf ball reference books
A great ball!
Tip: When you zoom in on an image of a nice, even unused golf ball
on this site, all kinds of paint chips and cracks can appear and it
looks like the ball has been through a war zone. This is because the
ball is being magnified exponentially beyond its original size. When
viewing the ball in your hand, however, those same chips and cracks
appear quite insignificant, which they are, and are usually not even
noticeable. The best indicator of what a ball will look like in real
life is when you size the ball on your screen to the same size as an
actual golf ball - usually 1.68 inches in diameter.