Stamped with the light blue owner's initials "AAC" on the equator, this ball shows no use.  However, this ball is more than just another gutty ball.  A closeup inspection reveals a number of anomalies in the surface pattern.  The ball was either made from one of the first molds used to produce balls, a mold that was rife with variances in its pattern, or it was cut by hand. 

The last image that accompanies this lot is a closeup of the ball, so the variances can be see with greater clarity. To point out just one thing in the last image, look at the center columns in the lower half of the ball. There are columns of thin squares next to a column of wide squares.  On typical molded gutty balls, the same columns/squares would be uniform in size.