France, Brittany. John V. 1399-1442. BI Blanc or Groat (26.97 mm, 2.79 g, 6 h). Marlaix mint, struck 1436-1442. + IOHANNES : BRITONV : DVX : M, irregular rectilinear lozenge containing eight lis? (ermine skins?) in three lines (3 / 2 / 3); all within dotted border / + SIT : NOME : D[NI : BENEDI]CTV :, cross potent within dotted border. Roberts 5132. aVF, dark original toning, nice work for the era.