Yep, Bulgaria. It "looks old" perhaps because the monument it depicts is old: the
Madara Rider, carved by the mediaeval Bulgars sometime around 700 AD. But sadly, the coin itself is modern. Since it's been featured on numerous denominations struck from yellowish metal since 1992, it's impossible so say which denomination this one is.
Don't say "infinitely" when you mean "very"; otherwise, you'll have no word left when you want to talk about something really infinite. - C. S. Lewis