It is said that on losing his savings in a bank failure he concentrated on engraving in mezzotint .
On leaving the Worcester works in 1774 , Hancock is next supposed to have gone to the Staffordshire Potteries .
Hancock is said that on losing Hancock 's savings in a bank failure he concentrated on engraving in mezzotint .
On leaving the Worcester works in 1774 , Hancock is next supposed to have gone to the Staffordshire Potteries .