French 'Mcmahon' Transferware Plate Pair

19thC French transferware plates commemorating battles between France and Russia, 1855 & France & Austria, 1859 lead by Patrice de Mac Mahon,son of aristocratic Franco-Irish family. Center medallion features scenes of the French victories; geometric Art Deco border design. HB Choisy le Roi mark dates them to the late 1800's or early 1900's. Age appropriate wear, discoloration and a crack in one plate.