I read the progressive increases $0.02 every $3 pull.
Therefore, if the progressive increases $0.02 every $3 pull, this indicates over $300 million has cycled though the machine (or $20M per year).
Also read this machine was hit several times but the person only bet $1 or $2 and not max bet so the progressive remained intact.
If you want the big money, bet the $3.
$1 bet and you get 3 lions, you would get $25,000.
$2 bet and you get the 3 lions. $50,000.
I believe there was originally 6-8 machines and after the progressive was hit, the machine was removed.
Look in the background of this picture from "Vegas Vacation". See the Lion's Share winner sign?