Greek Lyre shape reverse [opgelost]

Probably helmeted Athena. Looks like there are some letters to the left of the profile. I've searched for Greek with a lyre but haven't found a similar one so I could be mistaken and the shape is not a lyre. 19mm x 2mm 4.46g bronze.

Salve,non è una lira ma due cavalli attaccati. Bronzo di Perinthos in Tracia.

https://www.acsearch.info/search.html?id=11366082

Grazie mille!