TC25-235 BUTT MORTISING PLANE. Rumbold. Patented Christmas Day, 1951, by Wilbert Dohmeyer of Crete, IL, and manufactured by RM Rumbold company. PTAMPIA II, page 291. Varnish on knobs is worn and some light pitting on cheeks and sole. Not that old but unusual and hard to find. From the collection of Harold Unruh. Good 80-160