Hi,
You could do a solvent test to see if it has a synthetic component. If it
dissolves in acetone or toluene, it is most likely not insect-related.
Linda Roundhill
Art and Antiquities Conservation LLC
On Fri, Feb 1, 2019, 9:21 AM Fusco, Maria Hello all,
>
> Hoping someone with more expertise
This is likely to be an old infestation. If there are old tunnels and damaged
wood, when the piece is moved around vibrations shake some of the old frass and
detritus loose. This happens fairly frequently with a few of our older pieces.
An older method for “fixing” bore holes used to be to plug
