Watch List notes:

Trajan Decius (249-251). AR Antoninianus (22mm, 3.71g, 6h). Rome, AD 250. Radiate, draped and cuirassed bust r., seen from behind. R/ Dacia standing l., holding staff surmounted by ass's head. RIC IV 12b; RSC 16. VF
Estimate: 20 GBP