1904 LA Purchase Fractional Gold

I've never seen one of these before. Were these struck at the Expo by the US Mint?

-MV

i hadn't either

I'm looking online and will need to search more to find out how this 25C got put into play and was it at the expo. Everything I read only mentions the dollar from the expo.

mysterious and a cute as a button

Update

There is a 10 star version that is cataloged as H-61-310 in the Hendershott reference on memorabilia from the 1904 St. Louis World's Fair.

Also, the "Z" at the base for the fleur-de-lis obverse design is the initial of Farran Zerbe who privately minted and marketed these pieces at the 1904 St. Louis World's Fair. Zerbe, who would later serve as President of the American Numismatic Association, was also in charge of distributing the classic gold dollar commemoratives struck by the U.S. Mint in connection with the Expo. A wonderful proof-like example of the 1904 St. Louis World's Fair gold quarter dollar.