HCL Technologies is a vendor of IT products for the casino industry and exhibits at Gaming Technology shows (see below). It is reasonable to assume that the $500 chip was a promo item given away at their booth. I know that the logo on the chip does not match the corporate logo, but this might be a one off prototype. The characters between H and C and C and L are not periods, they would be at the bottom of the character and there would be one after the L if it were a period. Instead the character is called a DOT and is used to separate the other characters.