R-, Bernard II of Świdnica or Henry I of Jaworski or Bolko II and Henry II, Quarterly knight's helmet, Lwówek 1301-1312

Knights' helmet with a plume of 6 feathers, around the inscription GALEA DVCVM SLESIE, on the reverse a Piast eagle in front with its head to the left in a shield, around the inscription IVVENVM BOLKNOVUM. Duchy of Fürstenberg. Fairly good legibility, patina.