One of the things I really love are vintage photos of medieval stuff. It just adds another dimension to our never-ending fascination with history.
These ivories were photographed in the 19th (c. 1870) century and even that is 150 unimaginable years ago! Anywho (restrains herself from more flailing) you can read about these in detail here.
(I’ll post my favorite one in a separate photoset, because somehow the resolution on these, originally, is so good, and the scans are so amazing, that it deserves more attention)