Signatures and logos during a refinish should be photographed and documented if the original maker cannot do the work, or is not chosen to do the work. Especially in the case of deceased or retired cuemakers. It does not hurt to document the cue in Microsoft Word, insert some pre-refinish pictures, and post refinish pictures and keep the document with the cue
It gets harder and harder to keep historical information as the years go by. I also implore those buy vintage cues from the original owner to do something, anything. Even if its on a napkin, or back of a flyer, to get any history on the cue you can and keep it with the cue.
Just a suggestion.
JV