> [...] the maker was almost certainly a transcriber who used it to keep his place on the page and note the column he was writing in when he stopped. The wheel would be moved to the stopping point and the circle turned to the number of the column he had been writing in when he stopped.

It would make a lot more sense that the bookmark was placed in the source book rather than in the copy. I.e. the wheel would be turned to the source column they had been reading from.

I have a pretty over engineered fidget spinner on my desk. (Flyaway) It’s amusing to imagine what a future archeologist would say about its function and importance to my work.

Disappointing it doesnt list the expected or sale price that it went for on either the article or the linked auction page.

Maybe bookmarks need innovation. Not sure what exists out there now, but could be a cool product

Now that’s an NFT!