Bill Cohenour's book listed auctions in 2008-2009 was $80-$90.

I do not know the exact date of release but had to be somewhere between 1995 & 1999. HARRAH'S Casino Corp. bought out and took over Players Casoino at the beginning of 2000. I live just about 7 miles from where the Players Casino was located in/on Lake Charles, Louisiana. I made many many trips to the Players Casino and also later the Star Casino. I do not remember seeing the silver strike machines on the riverboat casino's before 1995.
I never saw the $20 silver strike machines because that was to rich for my pocket book to play then.(I was ONLY a $.25 cent player then) As they was probally located in the high limit area. I did play the $10 Silver strike machines occasionally. However the $10 SS machines came and went several times during this time 1995 -1999 span. So probally the $20 SS machines did to. I wish I would have played the $20 machines & the $10 machines more when I had the chance ------ If I had only have known about them then and what I know now.?????????

Dan