The symbol on right hand side of the reverse of RRC 513 (aureus and denarius; older post on this type) has been interpreted as a military honor, but the parallels are not definite. Crawford calls it “phalerae (dona militaria)”. Hence my interest in this sealing from Zeugma published by Mehmet Önal:
The idea of this representing phalerae is based on the reconstruction of how these would have been worn:
Various reliefs showing soldiers wearing such honors:
It gives me some comfort that the most similar representations are the simple early ones…
Liv Mariah Yarrow 