Described as "A first issue," but dated 1968. Does this mean the first $100 issue?

Also designated a new TCR# in TCR #10, so where was this chip found and are there others?

Lastly - why is the inlay described as "WHL-WHITE"? It looks like a cog to me.

Maybe some subtle difference escapes me?

Nice looking chip - as all Tropicana fountain ones are.

Thanks in advance for any light you can shed on the auction lot!