I'd like help in putting mint names and dates with these four similar Caesars Palace $5 tokens. I believe they all date back 25 years or so. Only the first one has a mintmark (JM). Others have neither date nor mintmark. The first two designs appear identical, but one has a mintmark and other does not. The last two tokens have different artwork... look at the grapes in relation to the Roman's head.

If there are separate O'Neal numbers, I'd like to find those as well. Any token collector that can help?