I got one of them as well. I forgot the exact history of the company. But it was bought out by someone in the 70s. So I'd figure your in the ball park at about 40 years. But mine is over 50. Because my great uncle bought his in NY back in the 50s.
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"Nobody beats you, you beat yourself." "The worst anyone can do is tie with you"
The Black Hank Williams Jr
Southun Stroka
NC Tough Shots Bowler