Uruguay 1866 5c Postal Stationery Die Proof with 'CENTECIMOS' Error

Uruguay · 1866 · 5 Centesimos

This is a die proof for the 5 centesimos postal stationery envelope stamp issued in 1866. The design features a large numeral '5' within an ornate oval frame. Notably, this proof displays a significant spelling error, with the currency spelled 'CENTECIMOS' instead of the correct 'CENTESIMOS'.

In the mid-19th century, Uruguay was developing its postal system, and errors on early issues were not uncommon due to reliance on foreign printers and less stringent quality control. This 'CENTECIMOS' error is a well-known and sought-after variety in Uruguayan philately.