Board Thread:Spoilers!/@comment-25361971-20150128004028/@comment-91424-20150403170829

Yes, I've also noticed that sometimes they say 200, and sometimes 300. But many people seem to believe that the Dark One is 300, even though the show states otherwise. My point is that whenever the show creators or actors state something that is contradicted by the show, we should go with what the show says.

Of course, "a couple hundred years old" could easily mean "over two hundred". Two hundred years old could mean anything between "almost two hundred" and "two hundred and a few decades". But we do know that Baelfire arrived in our world after Big Ben was completed, and the famous clock tower was completed in 1859. If Rumplestiltskin is approximately fifty years old when he becomes the Dark One, he could not have been born any earlier than circa 1809, which would indeed make him a couple of hundred years old.