You can ask, but if no one replies, they probably can't tell you anything more. In fact, the fact it is a king/a horse
is not obvious from just looking at it, so you know better than most. I do hope
someone can tell you more, but have a little patience, minor celtic
coinage must really be an esoteric field
. With a little luck someone might be able to tell you something.
Some things to possibly consider.
Is there a particular die orientation? Some coins have a particular, both dies up orientation, or one die up, one die down. die orientation is probably more important where you have a coin of a kind that typically has a die orientation, but a coin you are looking at doesn't. Bad sign. I kind of doubt that celts
bothered with die orientation, but you might check.
As an obol
the coin should be silver, particular weight
is significant. You might be able to conclude that it is a silver coin of a particular weight
that would make it an obol
, or hemiobol
,) on "such an such" a standard
. If you can figure out the standard
, you might be able to figure out the mints that use that standard
.) something like that can be plausible for Greek, I am not sure it is plausible for celtic
Of course chances are whatever tribe made them could have used the types
for more than one denomination
. You can look at the types
and see if you find them elsewhere, then plausibly deduce that yours is a (possibly unpublished) fractional of those.