Mauritania new sig/date (28.11.2015) 100-ouguiya note (B121b) confirmed

Mauritania_BCM_100_ouguiya_2015.11.28_B121b_P16_AC_0876780_A_fMauritania_BCM_100_ouguiya_2015.11.28_B121b_P16_AC_0876780_A_r
B121b: Like B121a, but new signatures and new date (28.11.2015). Prefix AC.

Courtesy of Fernando Iglesias.