here's an almost complete example...though it did cost more than $12
Theodosius II
A.D. 437
19x20mm 3.5gm
DN THEODOSIVS PF AVG; Helmeted bust of Theodosius II facing right, holding spear and shield.
CONCOR-DIA AGV; Theodosius II and Valentinian III, nimbate, standing facing, holding spears and long cross.
In ex. CONS
RIC X Constantinople 460
Despite having a Constantinople mintmark, scholars believe that these coins were actually struck at the Crimean mint of Cherson.