Iron Earth plate Boulenger Choisy-le-Roi, Iena decoration

This charming flat plate in "Terre de fer" stamped "Boulanger & Cie, Choisy-le-Roi" features a fine green decoration, known as Iena. According to my research on the design of the stamp on the back, this plate dates from between 1863 and 1920. For a plate that is over 100 years old, it is in very good condition, with no cracks or chips, but it does show a slight patina of time: small light scratches and stains on the back. For me, it is perfectly usable on a table, but it would also be ideal as a wall decoration when grouped with other antique plates, for example, which would have the advantage of preserving it for a long time. It measures 23 cm in diameter and has a maximum height of 2 cm at the rim.