What is best preserved photo(s) have you found?
Yesterday I have been going through my ancestor, Cyrus Siberts 1839-1903, letters between himself, his family members, and a friend. Half of them are civil war letters that his children had taken the time to number the order. Tucked in the stack of letters is a perfectly intact 1938 Christmas card with four photos of a house complex covered in snow in them. The photos are so well preserved that they looked like they were printed in Christmas 2025. It was like finding gold and had spent several minutes admiring them. I have a photo of my great-grandmother, Cyrus' granddaughter that was taken around that time and it didn't survive as well.
Even though this is artwork, not photographs. I also found artwork that Cyrus' three granddaughters through his oldest child (I'm descended from his youngest child) made for their grandfather for Christmas in the 1880s. Cyrus lovely used the card as a book mark so he can look at them every time he reads one of his favorite books. It was left there shortly before he died, and they stayed preserved in the book as it pass to his youngest child until I discovered them in perfect condition.