While this is true, historical $5000 and $10,000 federal reserve notes have much larger than their face value in the secondary market as collectors items now, i

While this is true, historical $5000 and $10,000 federal reserve notes have much larger than their face value in the secondary market as collectors items now, if they're in good condition and can be "graded" and put in a slab by a trusted neutral evaluation agency. Banks and the federal reserve have been collecting and destroying them as they show up.