I am very acquainted the second lumber: We currently have a 19th century Glen occur cocus, as well as over twenty years I played a 19th century London-made flute manufactured from cocus. Furthermore I've analyzed, taken care of, and played hundreds of nineteenth century London-made cocus flutes over a 35 year period- the timber is quite distinctive to look at. (And quite distinctive in tone, in flutes.)
Cocus has actually an utterly smooth even surface without those outlines which are often observed in your photographs. Your pipes look like in a mid-brown somewhat rough-grained timber that has been painted or stained darker. Cocus varied, in old flutes, from a mid red-brown to jet black. Someone who hasn't taken care of many old Cocus tools might that is amazing the darker Cocus is African Blackwood, nevertheless the two look rather various.
For Highland pipers not really acquainted with the appearance of the "cocus" or "cocoa" lumber therefore universally preferred for woodwinds (including pipelines) when you look at the 19th century here is an attractive cocus flute