Complex sentence: The most prolific period was between 1850 and 1950 and some of these panels have eclectic, Art Noveaux, Art Déco, Historicist or nationalist character and are an important part of the local cultural heritage.
Split into simpler sentences: The most prolific period was between 1850 and 1950. Some of these panels have eclectic, Art Noveaux, Art Déco, Historicist or nationalist character and are an important part of the local cultural heritage.