Gruss Aus Munchen stein

I am very curious about this stein... story has it that only 4 of this particular stein was made because there was a chip in the mold before production was completely stopped. The chip is on the bottom/base. I've had it for 35 years and before that my grandmother had it for years. Any information would be wonderful. Please email me at jlusk@kc.rr.com. Thank you!