From a deceased estate , I think these SU;s are prewar but although they are similar are not a pair , one has a 10oz bronze piston the other ali piston and spring combination 10oz , both in good condition but will need new butterfly spindles , the rear flanges are not distorted
Original Molsheim Bugatti Schraubstock Nr. 52 (Matching Numbers!)
**Historisches Meisterwerk der Automobilgeschichte: Originaler Ettore Bugatti Werkstatt-Schraubstock („Bugatti Vise“) aus den 1920er Jahren – Matching..