I picked this up on a whim for $5 awhile ago.. just getting to it now and wondering if anyone has any good sites for Celtic coin research? I find it a very interesting little coin and should be worth the $5 for the learning experience alone. Hopefully the picture is aligned correctly ... 17mm, 3.4g At first glance the reverse looks a little like a crude "wolf and twins" attempt.. just a guess.. (poor guess - seems to be a boar.) Hail, Hail....
thinking I have it (although boar facing the other way): Celtic, The Leuci. Circa 1st Century BC. Potin 17mm (4.68 gm). Head left with three locks of hair / Boar standing left. CCCBM III 405ff; Scheers 186. http://www.wildwinds.com/coins/celtic/gaul/leuci/t.html From Wikipedia: The Leuci were a Gallic tribe, recorded to have lived in the southern part of what is now Lorraine. They are mentioned by Julius Caesar as a people supplying wheat to the Roman army in 58 BC, along with the Lingones and Sequani.
Leuci is correct. As far as Gallic potin coins go, these are pretty affordable. Mine is an (earlier?) more realistic style
There are a lot of different styles for this potin. See here for a few examples : http://www.forumfw.com/t13319-les-potins-au-sanglier-des-leuques-les-differentes-classes About a site referencing celtic coins, I don't think there is one. There is an old book (1892..) but free that can be downloaded here : https://gallica.bnf.fr/ark:/12148/bpt6k8803676/f5.image It's a bit old and some coins are not in it, but it is still good.
I do believe that I have that one, too. As well as . . . 200-100 B.C. CELTIC Danubian Philip II of Macedon 45-10 B.C. CELTIC coin of Britain Sp.'98 396 52-27 B.C. CELTIC, Senones, North-West Gaul 55 B.C-50 A.D. Celtic coin of Britain, Durotriges, Billon Stater, Sp.'98 367 120-100 B.C. CELTIC Potin 'Iron Age' 'Thurrock
This cast coin is much like it, but from a different tribe, the Senones who lived near what's now Sens - 80 miles southeast of Paris. It was found in a meadow in central France, quite recently, I bought it in Belgium. Potin Senones, 80-50 BC. Obv. Head facing r. with 6 strands of hair. Rev. Horse left with long whipping tail, two pellets in the field. 20 mm, 3.57 gr. De La Tour 7417 (that's the abovementioned 1892 standard work still valid for Celtic coins).