The new Mizuno MP68 looks strikingly like the 1982-83 Titleist forged tour blades and some what like the 1983 titleist model 821. The lofts in those years centered around a 30* 6 iron.
I have a set of the 1983 Titleis tour baldes in very good condition and will compare them side by side when I see a set at my local pro shop.