1960s Muldivo Mentor Mechanical Pinwheel Calculator for repair. Royal Copenhagen flat with the drum head

flat with the drum head giving an action at the 12th fret of 1/4 inch

Marygold AKA Marion Crowe 1896 -1997

elegant gold-gilt rim that frames the landscape scene

Beautifully presented moss agate in sterling silver mount

generally good

1960s Muldivo Mentor Mechanical Pinwheel Calculator for repair. Royal Copenhagen flat with the drum headPre owned 1960s Muldivo Mentor Pinwheel Calculator for Repair. Carriage is stuck and will not advance. All other features fully working. Includes original instruction manual and grey plastic soft cover. Step back in time with this beautifully engineered mechanical calculator from the 1950s 60s. Long before digital tech, businesses, banks and schools relied on this pinwheel marvel to crunch numbers. The Muldivo Mentor WSR 160 is a 1960s German made,