I'm going to guess the 60's but I could be way off. Interested to hear how you "found" it.

Our club is 76 years old and, as with many others here who found old balls, one of the ponds was drained and dredged and LOTS of balls were dumped nearby. I actually stepped on this by accident. It was completely covered in mud and couldn't be seen. Given the style of lettering, I'm guessing it's older than the 60's.

I remember playing them in the 70"s, when I was in high school. Long ago.......

still pretty sweet. i'd definitely display it.