Cru'Dad looked up the book values, but remember these are NOT market values, & the condition of your coins are barely GF-GVF.
Julius Caesar VF £125 EF £300 (Sears 2000)
Caracalla VF £40 EF £120 (Sears 2002)
Sept Severus circa VF £22 EF £65 (2002 but not in Sears)
Titus circa VF £175 EF £425 (Sears 2000 for right bust) – So circa £200 to £475 for left bust.