This one says currency, but it doesn't have the "turn into currency" option, anything I'm missing here?

You can turn in here

Oh, thanks, I knew that, just curious why all the other currencies have the inventory option and this one doesn't, but not a problem, hope curiosity won't kill this cat ;) :D

probably just an oversight. the option has been added to different currencies at different times, and sometimes they might be overlooked and/or considered low priority because "how often are people really going to need to turn in just one of these?" (i think they should all have the option regardless, as there are plenty of ways you could end up in possession of exactly one unit of a given currency, especially outside that currency's holiday.)

I’ve wondered the same thing, I often find single Vesnali coins in the donation corner (there’s some in there right now!), I vote to add the link if we end up turning this into a suggestion thread

Uhm...yeah, I get that, true.

Thanks :)