There's even more info for them in any of the guides: https://legitcheck.app/explore-the-library/
e.g. for this very item in the screenshot, the guide is: https://legitcheck.app/guides/real-vs-fake-hermes-birkin/
Partly answered here: https://news.ycombinator.com/item?id=27090248
Partly answered by someone else here: https://news.ycombinator.com/item?id=27089111