Not a hugely successful model but the
Marshall Artiste was in production from 1971 to 1978.
I've got a 1974 2040 model (50W 2x12) combo with Celestion Greenbacks. Pretty bassy and by nature very clean but used with a THD Hotplate I can get some sweet natural distortion from it, though it's not exactly screaming.
With a Tube Screamer in front it's more flexible. :)