.....searched under group casino companies and almost everything in-between still "nothing".

Yes, also looked at all the logos collection under "S" groups got no where.

2.50 denominations looks like not a "$" US issue.

The "S" does not come close to "Sheraton" US or some of the Americas casinos issuance.

Latin and South America uses a lot of "Casinos".

Design of the chip looks like - plastic issuance company.

Will try to send this chip to Eastern European friends if they can help or have notice the use of this design.

I have this chip for as long as I started collection snappers.

The search for "ID" will continue....."never ending search going, going and going....."

Thank you all of you for trying and helpful hints on Sammy's