Another unknown Alexander III [solved]

I got this in the same lot as this one and this is also unknown to me.

I have browsed all 17 pages of Alexander III coins here on Numista without finding anything, so now I'm asking the experts.

Weiggt: 17.06 g

Diameter: ~26mm

Reverse: ΟΧ left of Zeus, ΣΙ below chair.

Thanks!

Hi, nice coin!!! this is not Alexander III but Antigonos I, the successor of Alexander III, mint: Sidon 312/311 BC

reference PRICE 3512

https://www.acsearch.info/search.html?id=7196845 

tatinos2

Hi, nice coin!!! this is not Alexander III but Antigonos I, the successor of Alexander III, mint: Sidon 312/311 BC

reference PRICE 3512

https://www.acsearch.info/search.html?id=7196845 

Thanks a lot!

I found on a Greek site that ΣΙ was Sidon, or Syrophoenician, so I figured it wasn't Alexander III but just of his name. I guess this type isn't added to Numista yet?

I don't know if it's in Numista, I haven't looked!