Godfrey
somewhat colored
My F is an early one (1961-62) with plain prism. I resurrected it from the state that it was in when given to me, it'd been sitting in a basement, in a box, with the lens off for years. Have a 55 Micro on it, and a 28/2 pre-AI for it. It's a lovely old thing, and it works perfectly.
G
G