1851 Smith’s Illustrated Astronomy Textbook
If someone spots a book or stack of paper that looks really old, it’s a good idea to snatch it up – just in case.
The worst-case scenario is that it’s worth nothing, and you give it away or go back to the store. But this person knew exactly what they were looking at and immediately paid the 25 cents – knowing a similar one had sold on eBay for $227.