Can't distinguish any letters. I still think it may be a horse and not a bull. Any other suggestions are appreciated!
Of course it looks more like a
horse and not a
bull,however on this series sometimes bulls are not the usual muscular,and reminds a little
bit of horses.
An example here
http://www.acsearch.info/ext-record.html?id=237247Judgindg the
style of the
portrait on
obverse,my eyes are saying that there are
good chances this to be of Medussa's.
Unfortunately,the remaining detail doesn't allow to clearly distinguish the letters,although i am pretty sure about the presence of a
legend above "
horse" on
reverse.
Can't be sure about it,i only gave Seleukos I as a probability.