ClapperZapper posted:
"As far as alcohol, just be reminded that it is used to remove/dissolve/thin shellac. A common component in vintage woodworking."

This is the answer. The acetone will dissolve and remove the oils and lacquers but not the shellac.
We have to assume that there is shellac in the finish.The alcohol will dissolve and remove it.
If one wishes, a solution of both alcohol and acetone can be used and it will do it all at once.
Best,
John

Humble member of the League of Extraodinary Gentlemen (LEG). Joined 14 March, 2006. Member #1.