World War II vintage blue wool naval uniform jumper, in good condition with very little soil or moth holes. This makes a wonderful display piece!
There's no size label (or any label that I could find), but this is really pretty small. Garment measurements are 42" at the chest under the arms, sleeve length 17" under the arm, 24" long from top of shoulder.
There's no stretch at all, of course - so you'll have to allow enough ease to put it on and off if you want to wear it.