Hi Ser, I have found the following coin in coinarchives
and believe corresponds with yours.
If turn the obverse approximately 20 degrees towards the right you will be able to see the hair and the curls of Tanit. Sorry for my english.
CARTHAGE, Libyan Revolt. Circa 241-238 BC. Æ 24mm (8.69 gm, 3h). Sardinian mint. Wreathed head of Tanit left / Three grain ears; [crescent above], Punic "M G" across central field.
Carradice & La Niece -; Visona, Carthaginian pl. XXVIII, 8 var. (no letters); cf. MAA 70; SNG Copenhagen