'A Century of Progress' was the official motto of the 1939 World's Fair in Chicago, USA. Hundreds of different medals, medallions, tokens, and coin-like keepsakes were sold and given out for free. Today, collectors build collections of '39 Fair memorabilia.
The Hoover medal is one of the more abundant. Typical values run like this:
worn: $2 US dollar approximate catalog value
average circulated: $3
well preserved: $7
fully uncirculated: $18
Actual buy and sell values are different than catalog values shown here. See our Important Terminology page for an explanation.