My Mum & Dad bought me a set for passing all my 'O' Levels - still in the loft I think!
They're about 20/25 years old and, as I recall, introduced to the UK by a concern called National Golf - a forerunner to the likes of American Golf etc - the shop in Chester was run by Mark Roe's Dad.
As far as I'm aware they were Mizuno's first foray into the UK. Either that, or Mizuno made a couple of retailer specific models. My mate bought a set of lovely Mizuno blades called "Elite Pro" around the same time.
I thought they were good clubs; forged blades (3-SW) and persimmon woods (1, 3, & 5) and certainly did me proud for many years.
Hope that helps.