Ugly USA 3c "B" Grill stamp (Scott 82) sells for $US1 million+.
1867 3c Washington, red for sale at Mystic Stamp Company
How to find the grill on a stamp
US Stamps Prices Scott Cat. 94: 3c 1868 Washington Grill
Z Grill - Wikipedia
Price of US Stamps Scott 83 - 3c 1867 Washington Grill
Stamp Smarter - 1867- 1868 Grills
Ugly USA 3c "B" Grill stamp (Scott 82) sells for $US1 million+.
Siegel Auction Galleries — Power Search Results
Robert A. Siegel Auction Galleries, Inc. Sale - 967 Page 21
Stamp Smarter - 1867- 1868 Grills
Robert A. Siegel Auction Galleries, Inc. Sale - 968A Page 1
3 cents then, $1M now: 1868 stamp auctioned in NYC - The San Diego Union-Tribune
Stamp Smarter - 1867- 1868 Grills
Stamp Smarter - 1867- 1868 Grills
Grill Issues (1867-1868) | National Postal Museum
Robert A. Siegel Auction Galleries, Inc. Sale - 1106 Page 15
Stamp Smarter - 1867- 1868 Grills
Grill Issues (1867-1868) | National Postal Museum
B Grill ?????? - Stamp Community Forum
Identify different types of stamp grills - The Stamp Echo
Grills: Getting to know them
1867 3c Washington,"C" grill, rose for sale at Mystic Stamp Company
US Stamps #73 2 cent grills
Grill Issues (1867-1868) | National Postal Museum
Grill (philately) - Wikipedia
