Watch List notes:

SOUTH ARABIA, Sabaeans and Himyarites, under 'Amdan Bayyin [without Yanaf], (mid 1st - 2nd century A.D), scyphate silver quinarius (or light half denarius), (1.25 g), Raidan mint, on scyphate flan, obv. Male head to right in circular torque, monogram behind, rev. small male head right with Himyarite legend around, sceptre or monogram in field to right, (S.5718, BMC 1-3 [p.71, Pl.XI, 11], SNG ANS 1602-1609, Munro Hay 3.4i app.1 pl4 6.1); another similar, issued by Tha'ran Ya'ub, Raidan mint, (1.34 g), flat flan, (S.5721, BMC 1-3 [p.73], cf.SNG ANS 1595, Munro Hay Arabia Felix cf.324i). Lightly toned, nearly extremely fine, both scarce. (2)

Ex Freeman & Sear, Mail Bid Sale 6, October 6, 2000 (lot 721 part).