£650
The Bonniksen Isochronous 50 MPH trip speedometer, by Rotherhams of Coventry, circa 1917, patent 2052/12, case stamped 1846, with side adjuster winder, diameter 8 cm.
Fees apply to the hammer price:
Room and Absentee Bids:
20% inc VAT*
Online and Autobids:
23.6% inc VAT*