Probably would be a taller E3 or even non-existent E4 with 24mm knot and dimensions. Some texturing on the bottom I am having a hard time photographing due to reflection off CA finish that filled it all like epoxy. For some reason the CA must have reacted with the glue line and unfortunately accentuated it. Not sure why - anyone know! Glue was TBIII. This walnut has been cut and sitting for more than 60 years now. Lots left