Watch List notes:

Armorial Carriage Plate, 18th century thistle-shaped plate, engraved with scrolled M below earl's crown, reverse with 10 small attachment lugs, 77 x 55mm., very fine with signs of use
A label from Barnard & Moore attributes the plate to the Duke of Marlborough, but it seems they 'mis-read' the crown.

Estimate: 60 - 80 GBP