1928 $100 Green Seal Federal Reserve Note Grades vf++. Series of 1928 one hundred dollar green seals are sometimes called numeral notes. This is because the black seal on the left hand side of the note contains a number (1 – 12) which represents the issuing Federal Reserve Bank. All twelve Federal Reserve banks printed series of 1928 $100 bills. 1928 one hundred dollar bills are special because they were redeemable in gold. They read “Redeemable In Gold On Demand At The United States Treasury, Or In Gold Or Lawful Money At Any Federal Reserve Bank.” The above phrase is known as the gold clause. This phrase does not make 1928 Federal Reserve note one hundred dollar bills also gold certificates. Gold certificates have a gold colored seal and serial number and are worth more than green seal hundreds. You can also find “Federal Reserve Note The United States Of America Will Pay To The Bearer On Demand One Hundred Dollars” printed on each note. All series of 1928 $100 bills were signed by W.O. Woods as the Treasurer of The United States and by A.W. Mellon as the Secretary of the Treasury. All series of 1928 Federal Reserve $100 notes were printed in Washington DC. They feature a portrait of Benjamin Franklin and have Independence Hall on the back. They have a green seal on the right and green serial numbers. Remember that “In God We Trust” didn’t start until 1956. Therefore no 1928 notes ever have that motto on them.