This
type has been minted over a period of about twenty years between 102/1 and 82/1 BC.
This autonomous coinage of Berytos is described in detail by Ziad
Sawaya, "Les monnaies civiques non
datées de Bérytos", The
Numismatic Chronicle (1966-),
Vol. 168 (2008), pp. 61-109:
https://tinyurl.com/v9nuhckThe letters ΛA Φ are interpreted as abbreviation of ΛΑΟΔΙΚΕΩΝ ΦΟΙΝΙΚΗΣ, the
Seleukid name of Berytos. But later there is also a BH instead of ΛΑ, abbreviating Berytos.
The article of
Sawaya is very detailed, I haven't read it entirely
, but perhaps you can find out to which variant your coin exactly corresponds
.
Regards
Altamura