The obverse looks like a tall vertical shield with crossed weapons behind. I don't think the reverse is an octopus.
Looks like Erythrai Herakles / club, bow, and bowcase. https://www.acsearch.info/search.html?id=29095
super , very good coin in archaic style!!!!! For many years I thought that this coin was octopus, until today I saw it from a different angle and I realized that it was the hair or hair of a lion. Thank you so much for your help.