US 1c Franklin 'Z' Grill
- Maker
- United States (USPOD), National Bank Note Co.
- Year
- 1868
- Rank
- 11 of 100
US 1c Franklin 'Z' Grill
US 1c Franklin 'Z' Grill by United States (USPOD), National Bank Note Co. (1868) is ranked 11 in the FLOAT 100 for Stamps. It sold for $4,366,000 on 14 June 2024. America's rarest postage stamp and, after the June 2024 record sale, the single most valuable US stamp ever sold at auction.
What is it, and why is it in the FLOAT 100?
America's rarest postage stamp and, after the June 2024 record sale, the single most valuable US stamp ever sold at auction.
Scott 85A, 1c blue, Z grill, perf 12; only 2 known (one in NY Public Library), the privately-held example the sole one ownable
What is the best-sourced number for it?
- Figure
- $4,366,000
- Kind
- Realized at auction
- Date
- 14 June 2024
Robert A. Siegel, William H. Gross complete classic-US collection, 14-15 June 2024: $4,366,000 — new record for any single US stamp. (Earlier 2005 trade valued it at ~$3M, swapped to Bill Gross for the Inverted Jenny plate block.)
This is a realized sale. Somebody paid it. Source.
How this is made
- The figure
- One reference price, taken from a named public source and shown with its own kind. FLOAT does not average it with anything or adjust it for time.
- Realized or not
- A realized price is a completed sale. A market asking price and a price-guide value are not sales, and are labeled as such wherever they appear.
- Why no grade ladder
- Most FLOAT 100 entries are individual objects. There is one of this, so there is no population and no spread across grades to show.
- Archive
- 2026-08-08