An interesting aspect of the Federal Reserve Notes from 1928 is that their redemption wording states, "Redeemable in Gold on Demand at the United States Treasury, or in Gold or Lawful Money at any Federal Reserve Bank." No Federal Reserve Note since 1928 has carried this redemption.
This series 1928 $500 from the Chicago district is an Extra Fine plus example that saw very little use. Friedberg#2200-G.
Attractively Housed in a Capital Plastics deluxe currency holder.