There are not many places in the internet that atually reference these golf clubs – but a wonderful history of Mizuno golf clubs can be found here :
“1995 launch alongside forged cavity set. Presumably responding to market trends for oversized irons at time”.

I came back to golf properly in 2021 and am still gaming these. I’ve compared to brand new clubs and although lofts are different – the feel of these clubs for me is still top notch and I don’t plan on giving them up soon.