And I thought this only happened with baseball cards in an old shoebox in the basement... not old Jewish manuscripts (a haggada)

from the BBC:

A 300-year-old manuscript found in rubbish during a house clearance is expected to fetch a six-figure sum at auction next month.
The 18th Century handwritten Jewish religious text was discovered in a cardboard box in a garage in Macclesfield.
The unique work is attracting attention from Jewish communities in the US and the Middle East.