Agricultural engine license plates - Plaque (2) - Metal

Historical identification plates for Italian Agricultural Engine Users (UMA). These triangular plates were not vehicle registration plates but were used to identify agricultural engines and benefit from tax advantages on fuel.
Details
UMA: The acronym U.M.A. stands for 'Agricultural Motor Users'.
Function: These license plates were issued to benefit from tax advantages on the purchase of agricultural fuel and did not identify the vehicle or owner for road circulation.
Province: The first abbreviation (e.g., 'PC' on the best-preserved license plate) indicates the issuing province (Piacenza, in this case), followed by a sequential number.
Era: These types of license plates were used in Italy for several decades. The colors changed over time; in particular, after the Second World War, the emblem was modified.
collectible pieces