[Piano] [Wornum, Robert. (1780-1852) & Wilkinson, George. (1783-1855)] Messrs Wilkinson & Wornum's Upright Patent Pianoforte - Hand-Colored EngravingAn attractive hand colored copperplate engraving, ca. 1812, of the earliest upright piano, designed and built by Robert Wornum and George Wilkinson. In fine condition with an attractive mat. Page size 5. 75 x 9. 25 inches (14. 4 x 23. 5 cm), tipped to a window mat with total size 11. 25 x 14. 5 inches (28. 5 x 36. 8 cm). Robert Wornum, important piano maker and music publisher in London, introduced the small cottage and oblique uprights and an action