Toshiba ST-420 tuner, any one heard of this ???

I recently acquired a ST-420 tuner with 6 gang tuner. Looks nice and appears well made typical of the 'silver' tuners made in the 70's from Japan. Any info or feedback (good or bad) would be greatly appreciated.
No,sorry.But here is a good sight for other tuners.
I know this is an old posting but I have a Toshiba ST 420 too. It sounds nice but the sensitivity is not the greatest.