A detail question about Arthur

[jelazakazone]

I've spent something like 20 minutes trying to figure out which hand and finger Arthur wore that ring on.  Heck, I can't even figure out which season it happened right now.  Every picture I've seen either has his hands in gloves (like he's got something wrong with his hands and can't be seen without them on or his sword is going to damage his hands) or he doesn't appear to have a ring on, but I know he wore one at some point.  Anyone?

Thanks!

ETA:  Just watched this adorable little interview with Bradley and Colin.  Anyone else watch it?  I am wondering if Colin got the "squeaky chair" line from Bradley who said "squeaky door" in this interview.