Watch List notes:

Spain. Philip IIII. 1621-1665. AE 16 marivedi (26 mm, 4.30 g, 12 h). Madrid mint, Struck 1664. (rosette) PHILIPPVS (rosette) IIII (rosette) D (rosette) G , bust of Philip IIII right within linear inner border / HISPAИIARVM REX 1664, crowned arms of Spain, M / Y to left, · 16 · to right, all within dotted border. Calico type 213, Cf. 1148-50. Good VF, well struck on full flan, warm chocolate toning.

this mint mark M / Y is not listed in Calico for 1664, but it is for 1663