1650 NB - - 1651 NB - - 1652 NB - - 1652 NB - Dots above and below N and B - 1652 NB - Dots above, below and left and righ side of N and B N and B - 1653 NB - - 1653 NB - Dots above and below N and B - 1654 NB - - 1654 NB - Dots above and below N and B - 1655 NB - - 1656 NB - - 1656 NB - Dots above and below N and B -