kothornos

I think that folks are missing the point of a buskin, or an open boot, more like a sandal, (cf. Japanese geta see illustration in Wikipedia article). The tragic buskin mainly increased the actor's stature while on stage. It is possible that the kothornos might have been worn over some other kind of shoe, as a kind of external lift.

It is interesting that in Late Latin (mainly in Patristic literature), coturnus came to mean 'proud'.

Ceci n'est pas un seing.