Northumbrian double smallpipe
Bagpipe, bellows-blown: 2 stocks (a: double chanter / b: drone)
Baines, who fails to reveal his source, shows a drawing of a reconstruction by W.A. Cocks; It is copied in Leydi; The orginal I was unable to trace (yet) [2020], but it is definitely not in his »Northumbrian bagpipes«.
Baines, Anthony: Bagpipes [1960]. Oxford, 1973 (revised), p.129* (Double small-pipe).
Leydi, Roberto: La zampogna in Europa. Como, 1979, p.92* (No specific name).