What obverse design does a late Roman coin have?
Can you please elaborate on the obverse design featured on a late Roman coin? I'm particularly curious about the iconic elements that would typically adorn such a coin, such as any emblems, portraits, or inscriptions that might be present. Are there any distinguishing characteristics that would immediately identify it as belonging to the late Roman era? Additionally, how does this design compare to those found on coins from earlier periods within Roman history?