Watch List notes:

Lot of four billon tetradrachms of Valerian I. (1) Year 4 = 256/7 AD, 12.84g. Bust laureate, cuirassed right, fold of cloak on front shoulder, Medusa head on cuirass / Tyche seated left holding rudder and cornucopia. Cologne 2867. (2) Year 5 = 257/8 AD, 7.76g (underweight). Same imperial bust type / Turreted Alexandria standing left, holding bust of Sarapis and scepter. Cologne 2869. (3) Year 6 = 258/9 AD, 11.49g. Laureate, draped, cuirassed bust right, seen from front / Same Alexandria standing type of coin 2, but dated Year 6. Cologne 2873. (4) Year 6 = 258/9 AD, 10.16g. Same imperial bust type / Eagle standing left, head right, wreath in beak. Cologne 2872. All four of these types are common according to Emmett.