A young man who is using my woodworking shop to repair the neck of his Martin 000-18 guitar brought a mandolin with him. There is no label on the inside, and nothing on the headstock. The sound holes are probably characteristic, though:
Here are a few other photos ... would be curious if any of this looks familiar to anyone.
The top is laminated: it looks like 3 part ply. The back may be, too. The tuner knobs (buttons?) are mostly missing--it looks like something ate them. Not sure why that would be. I have no idea of the provenance or history of this instrument.