Medal experts pls.

historygeek

From ebay

How much does this catalogue for?

elverno

Unfortunately there's no definitive catalog for medals, like Krause or Spinks, etc. for coins. I'd guess it's about a $15-20 medal, but that's a total guess.

Askari

Albert Barre was quite prolific and Expo issues can be popular. Best I can tell from the pic, it looks to be XF -- pretty good for the age -- and probably lightly cleaned quite some time ago. I don't collect his work, which is a little earlier than my area, so I'm not really up on prices, but I'd say it'd go for $30 or so.