Jean Gordon's carvings Woman with Samisen

This is a 3D scan of a wooden carving made by my late mother.
Scanned with an Einscans S (Scanmaster Plus) scanner.
Sliced with Simplify 3D.
Printed in PLA on a Prusa Original i3 Mk2.
And, yes, I know that a samisen is a three stringed instrument but the original carving has four tuning pegs. But what else can it be? Other than a four stringed three stringed samisen?