This is a really wonderful (and convertible) original five string Washburn/Lyon & Healy. My favorite of the Dobson/Bacon-doughnut rings - this is a faux bracket band Washburn 10 3/4" pot with the screw on resonator. Simple decoration on the neck but it plays and sounds great for clawhammer and especially old-time fingerstyles.
Links to videos (with and without resonator) below
