EL 80% 6-shekels of Lybians during their revolt, 241-237 BC

Obv. head of Tanit
Rev. horse standing r., issue-marks here H and ..

Jenkins-Lewis 449   3.72 g   Berlin
this coin

on 451 issue-mark III. Robinson suggests III stands for 3 double-shekels, giving a ratio between the metals 12:1.
The two electrum imitations of the Group IX type (Jenkins-Lewis 402-403) may belong to this group.