Please could you help identify this Byzantine Trachy.

I've had a foray into the later Eastern Roman Empire, and while I've been successful identifying the earlier coins 40 bronzes with M, I've just bought this Trachy.
W.G. Sayles' book Ancient Coin Collecting V was slightly helpful indicating the Emperor/sword could be Theodore I Comnenus-Laskaris, but the coin featured in the book has two figures/two swords. Internet searches have left me with no ideas . The coin not yet arrived has no weight or size sorry.
Could anyone help please?