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As for your bill.... "The $100,000 Gold Certificate was used only for official transactions between Federal Reserve Banks and was not circulated among the general public. This note cannot be legally held by currency note collectors."
Source: https://www.moneyfactory.gov/100000goldcertificate.html
PS: BTW, The ones that were issued have all been redeemed except the one in the Smithsonian Museum
Don...
Over the decades, many counterfeits of the $100,000 note have turned up. Mostly in Asia and the Philippines. They still show up from time to time. If you believe yours to be authentic, have it evaluated by a qualified professional. Please note that if authentic, because it is illegal to possess, and all bills are recorded to have been redeemed, it no longer has monetary value.