Large wood / glass frame, square (New Marston OX3)
outer edges ca. 85.3 cm, inner edge (visible surface) 76.3 cm. Picked it up by the roadside years ago and don't know it's previous history, but it looks home-built. Still structurally solid, I just don't have the wall space left to use it.
This offer has been gifted to someone and is no longer available.