Way cool---especially since they discovered early Imperial coins and not just small bronzes of Valentinian and/or Constantine.
Lets hope they are not nice stuck fakes made 5 years ago and buried in a convenient place opening the door to a wide acceptance of the fake coins...its been done before...
Here is another article which includes some photos of what they found http://archaeologyinbulgaria.com/20...f-ancient-serdica-in-bulgarias-capital-sofia/
More pics, but small; http://www.thehistoryblog.com/archives/38258 Neat find and from the periods I enjoy the most too.