The left one is an antoninianus with Claudius II Gothicus, minted 268-270 in either Rome or Mediolanum/Milan. The complete inscriptions read IMP C CLAVDIVS AVG / SPES PVBLICA.
The right one is also an antoninianus, with Aurelian, minted 270-275. Can't read what mint, there are several possibilities. The complete inscriptions read IMP AVRELIANVS AVG / IOVI CONSER. The reverse shows Aurelian receving a globe from Jupiter.