The $500 bill pictured in the article is a gold certificate: "Redeemable In Gold On Demand at the United States Treasury"... Looks like all $500 gold certificates were printed in 1928, as the 1934 high-denomination bills were only used for intra-federal reserve transfers:
Inflation? "[...] despite the amount of inflation that has occurred since 1969 (a $500 bill is now worth less, in real terms, than a $100 bill was worth in 1969)." -https://en.wikipedia.org/wiki/Large_denominations_of_United_...
The $500 bill pictured in the article is a gold certificate: "Redeemable In Gold On Demand at the United States Treasury"... Looks like all $500 gold certificates were printed in 1928, as the 1934 high-denomination bills were only used for intra-federal reserve transfers:
https://en.wikipedia.org/wiki/Large_denominations_of_United_...