23 May 1761
Paid Mr Ward watchmaker in Abchurch Lane for a new Silver watch in Exchange for my Old Pinch Back Watch five pounds as by his Receipt the No. of it is No.6923
Thomas has upgraded his watch, having swapped from silver to pinchbeck once before.
Pinchbeck is an alloy of copper and zinc which was used to imitate gold.
Abchurch Lane is still there in the City of London, running between King William Street & Cannon Street.
I need to do some more research about Mr Ward, but he may have been the master of the Clockmakers' Company in 1795 - a bit about that here.