While going through some of grandfather's coin collection I remember a 1967 Canada mint/proof set in a red box. It had been a good 8-10 years since it was last opened. Back then the coins were just starting to tone a little bit, today they are brightly toned gold, red, blue, and the quarter is all a dark blue/purple.
Does anyone have information on this set? Value? Mintage? I've never seen a Canadian set come in a long red box before.