This is considered a commemorative coin.
A Pilgrim Tercentenary coin from 1920 (152,112 were minted in 1920)
has a current value of $85 to $110 depending on condition.
Some sites that I recommend for selling are Varagesale.com, Ioffer.com, OfferUp.com, Ebay and letgo.com.You can also go to invaluable.com or liveauctioneers.com and search their directory for an auction house near you and consign to them.
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