Watch List notes:

Kanishka I. A.D. 127/8-ca. 147. Æ unit (17 mm, 4.62 g). King seated on throne, head left, with one hand raised / Wind god Vado advancing right, holding up cloak to represent the wind, with Bactrian legend OADO at right. MK ; ANS Kushan -. Extremely rare - only four specimens recorded! Green patina, bold and clear types. Good fine. 

All of Kanishka's seated type coins are rare. This variety with Vado on reverse is the rarest in this series - only four specimens are recorded.