PMG -
The high-denomination rarity was the top lot at the August 2020 auction.A $5,000 Federal Reserve Note certified by Paper Money Guaranty (PMG) realized over a quarter-million dollars to lead the way at the August 2020 Stack's Bowers US Currency Auction on August 5, 2020. Most of the lots in the sale were PMG-certified, including the top four, which each realized at least $80,000.

The 1934 $5,000 Federal Reserve Note (Dallas) graded PMG 65 Gem Uncirculated EPQ realized $252,000. US notes with a denomination this high are extremely rare and are sought by an elite group of paper money collectors. This particular 1934 $5,000 Federal Reserve Note is even more special because it is tied with only four others across all districts for the top grade in the PMG Population Report.
Other PMG-certified highlights that were part of the US currency sale or the August 2020 Stack's Bowers World Paper Money Auction held the same day included:

1918 $1,000 Federal Reserve Note (Philadelphia) graded PMG 65 Gem Uncirculated EPQ that realized $126,000

1934 $5,000 Federal Reserve Note (Richmond) graded PMG 55 About Uncirculated that realized $108,000

1922 $1,000 Gold Certificate graded PMG 58 Choice About Uncirculated that realized $84,000

1928 $500 Federal Reserve Note (Dallas) graded PMG 66 Gem Uncirculated EPQ that realized $45,600

1934 $1,000 Federal Reserve Note (Dallas) graded PMG 65 Gem Uncirculated EPQ that realized $40,800

1891 $50 Silver Certificate graded PMG 63 Choice Uncirculated EPQ that realized $36,000

Panama 1941 5 Balboas graded PMG 63 Choice Uncirculated EPQ that realized $33,600

1880 $50 Legal Tender graded PMG 40 Extremely Fine that realized $28,800

1907 $1,000 Gold Certificate graded PMG 30 Very Fine that realized $28,800

Pakistan undated (1948) 100 Rupees graded PMG 50 About Uncirculated that realized $28,800

Bahamas 1965 50 Dollars graded PMG Very Fine 30 EPQ that realized $26,400

1890 $20 Treasury Note graded PMG 64 Choice Uncirculated EPQ that realized $25,200

1934 $1,000 Federal Reserve Note (Chicago) graded PMG 66 Gem Uncirculated EPQ that realized $25,200