What is this coin?

[Mark R1]

The photo on the cover of this catalog looks like a piece of modern art. Can anyone help with identifying it?
https://www.forumancientcoins.com/catalog/roman-and-greek-coins.asp?param=18313q00.jpg&vpar=1385&zpg=93957&fld=https://www.forumancientcoins.com/Coins2/

[Jay GT4]

Probably a celtic tetradrachm copying a Greek coin of Philip.

Forum has one for sale

https://www.forumancientcoins.com/catalog/roman-and-greek-coins.asp?param=76349q00.jpg&vpar=800&zpg=86896&fld=https://www.forumancientcoins.com/Coins2/

[stevex6]

Those Celtic coins are awesome ...

Ummm, I once had this one (okay sure, maybe it's not quite as nice as that sweet magazine-example, but I absolutely loved this cool coin)

FRANCE. CELTIC TRIBES OF GAUL.
CORIOSOLITE CLASS IIB BILLON STATER
Date: 80-50 BC
Diameter: 20.69 mm
Weight: 6.13 grams
Obverse: Stylized Celtic head right
Reverse: Celticized rider on horseback right, below, boar right
Reference: De LaTour 6598
Other: From an old French collection .... super fricken cool, right?

=> they're almost like a Picasso

[Mark R1]

Those Celtic coins are awesome ...

Ummm, I once had this one (okay sure, maybe it's not quite as nice as that sweet magazine-example, but I absolutely loved this cool coin)

FRANCE. CELTIC TRIBES OF GAUL.
CORIOSOLITE CLASS IIB BILLON STATER
Date: 80-50 BC
Diameter: 20.69 mm
Weight: 6.13 grams
Obverse: Stylized Celtic head right
Reverse: Celticized rider on horseback right, below, boar right
Reference: De LaTour 6598
Other: From an old French collection .... super fricken cool, right?

=> they're almost like a Picasso

Fantastic!

[JBF]

I would say, no, Picasso is like them.  The coins are first, Picasso is later.