Hey chris,
My guess is that those are the same generics listed as cuba.
I would also think that this in a mistake. Probably someone found some of the generics in cuba and attributed them to the track because of the horse on them.
I doubt they would have used generics there, but there are some older cuban casinos the used generics, however they were usually over-stamped to reflect the club.

http://www.caribbeanchipguide.com/quickview.php?primarykey=CUBJRM&sort=type&series=0
Westen