Watch List notes:

World Coins and Tokens, Bohemia, John the Blind – Johann von Luxemburg (1310-1346), AR groschen, Prague mint, IOHANNES PRIMVS, – DEI GRATIA REX BOEMIE, crown within two circles of legend, rev. lion rampant, legend around, 3.64g, slight crease, very fine
Ex O'Byrne Collection, Part V, Christie's (20 May 1964), lot 211 (2nd item), with ticket;
Ex Baldwin's vault
John the Blind was killed at the Battle of Crecy, where he fought despite his blindness.