Where Are All The Faulty Rarities?

Also from Cherrystone:

Take a look at the Siegel census page of rare US stamps. Some examples of the rarities have faults, and most of them are illustrated on the census page for their issue:

https://siegelauctions.com/census.php

This includes past auction realizations, so you can also compare how much the faulty rarities realized in sale.

The Large Persian Rug (#R133) is a famous US rarity that is almost always faulty, although the most gruesome-looking copies generally were repaired decades ago.

They aren't really famous rarities, but if you head into the deep back of the book you'll find a few more. There are a number of 19th century carrier stamps, postmaster's official seals, postmaster provisionals, and revenues that are immensely rare (say, ten or fewer copies known) and always or almost always faulty. They aren't too frequently seen though.

Here's an example from Siegal. As mentioned above, expensive stamps are "repaired" so they look nice --including replacing missing pieces.