Wonderful old early Dukoff models, the so called ‘Stubbie’ is a one piece casting with a large chamber and rounded inner walls similar to the Link Tonemaster. They have a somewhat high floor and a slightly differently shaped chamber resulting in a bit more buzz and airspeed than the Tonemaster, but it is still a very vintage response; a big round and warm sound with a bit more buzz.
These two are excellent original facings. The 6 measures at about 0.095 and wants a slightly harder reed and the 6* measures at 0.096. They are both actually excellent payers and very satisfying.