There were not official releases but rather souvenirs sold to Exposition visitors. I don't think that the manufacturer is known. This type of large Lucky Penny was not exclusive to the Expo, but rather variations were sold at many tourist destinations across the US. This obverse (or a very similar design) was frequently used with different years, while the reverse changed to reflect the local market.
One thing that others may not realize is that these medals are huge - from 50 to 75 mm.
Inordinately fascinated by bits of metal with strange markings and figures
























