In 1604, to defray the cost of flood relief, Venice introduced what could be considered the first example of a 'stamp tax'. When the revenue fell short of expectations in 1608, Venice introduced paper with the superscription 'AQ' and imprinted instructions, which was to be used for 'letters to officials'. At first, this was to be a temporary tax, but it remained in effect until the fall of the Republic in 1797. Shortly after the introduction of the tax, Spain produced similar paper for general taxation purposes, and the practice spread to other countries.