“Holy Grail” of US Stamps Sells for $4.4 Million
WorthPoint
JUNE 25, 2024
The anonymous buyer purchased the stamp at an auction. Because its extreme rarity produces reliably high sales, Scott Trepel—president of the auctioneer, Robert A. Siegel Auction Galleries—considers the Z Grill stamp a “Blue Chip Stamp.” Siegel Auction Galleries. WorthPoint—Discover.
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