U.S. Mint Director Ventris C. Gibson signed in gold-colored ink 250 certificates of authenticity to be randomly inserted into limited-edition 2024 Harriet Tubman Birth Bicentennial three-coin Proof sets. Read more: https://www.coinworld.com/news/us-coins/signed-certificates-randomly-placed-in-tubman-proof-sets #CoinWorld #USMint #2024HarrietTubman #ProofSets #coinproofset #coin #coincollecting Images by US Mint