'T Lot' punch, 1759–73

This rather rough-looking punch, found among Watt's tools, is marked 'T Lot', a celebrated French flute-maker who supplied the King. Did Watt use the punch to mark his own flutes and sell them at a higher price? If he did, it is early evidence of a canny business sense which would stand Watt in good stead during the rest of his career.