jcmtiger,
DeBeer did make baseballs up to about the 1980s.
This ball on the below site is very close to mine, but mine does not have the "Anchor Brand" logo or markings. Nor does it have the model number for the ball.
The J.Debeer signature on my ball, as you can see, touches the stitching on the ball, where the ball on the below site has a space between the stitching and the signature. The below site contends that it was manufactured between 1900 and 1910. Color of stitching is two colored like mine, but I have yellow and white, instead of red and white.
So if this example is correct, then my ball is from just about the same era, give or take a few years.
If anyone can help to zero in the year, I would appreciate the information.
https://www.google.com/search?q=vint...ji_0_4ZcfmzCM: