I think an >1oz International Letter is as good as use as any for those $2 Inverted Jenny stamps! : r/stamps

Rare US stamp 'Inverted Jenny' sells for record $2M

Postage stamps and postal history of the United States - Wikipedia

4806c Inverted Jenny $2 stamp Imperf Single (Lower Left position) No Die Cut

Inverted Jenny, Full Pane of 6 x $2 Postage Stamps, USA 2013, Scott 4806 : Office Products

I think an >1oz International Letter is as good as use as any for those $2 Inverted Jenny stamps! : r/stamps

Inverted Jenny Sheet of 6 Souvenir USPS Postage Stamps Collectors Scott 4806

The art director for this souvenir sheet was Antonio Alcalá.

Lot of 2 Inverted Jenny Stamps Souvenir Sheet of 6 $2 stamps

Lot of 2 Inverted Jenny Stamps Souvenir Sheet of 6 $2 stamps

Are any stamps from 1995 worth anything? I have a lot of sheets, don't want to start using for postage until I know if any unusual ones are there. - Quora

A Printing Flub Created the Most Famous U.S. Stamp. You Can Buy One This Fall for $2 Million.

Wouldn't postage stamps be really easy to forge? - Quora

Rare US stamp 'Inverted Jenny' sells for record $2M

I think an >1oz International Letter is as good as use as any for those $2 Inverted Jenny stamps! : r/stamps