The long lost position 79 1918 24c Inverted Jenny stamp is to make a reappearance at auction on February 15, according to Linn's Stamp News.
The stamp is part of a major single owner collection that has remained in the same family for close to a century. It will cross the block at Leslie Hindman in New York.
Intriguingly, very little is known about it, including its sale record. There is only one other Jenny (Position 49) with a similarly obscure history, making this a much anticipated event in this year's numismatic calendar.
Famously, there are only 100 Inverted Jenny stamps.
All originate from a single sheet, which was acquired by collector William T Robey direct from a Washington DC Post Office in 1918.
He sold the sheet on to dealer Colonel EHR Green, who broke it up into singles for resale.
The owners have clearly got their fingers on the pulse of the market. The best known Jenny (the xf-superb 95 example belonging to Irwin Weinberg) sold for $1.1m in November.
This one is valued at $200,000-300,000.
The collection will include pieces of distinction, including a block of 1904 1c Pan-American inverts which is likely to be worth around $400,000.