Leather Cuirass Lorica Musculata, I used to think no way but

[Tarbicus]

the example of an Antonine era general from the Bergama Museum in Turkey.

That could be a subarmalis for a musculata. Just as some believe it bears the hallmarks of a musculata with the pteryges, that also means it bears the hallmarks of a subarmalis with attached pteryges, surely, and the metal part may have gone on top? I wish there was a better photo of the shoulders. But don't forget Travis also points out that it could be a ceremonial item.