Talk about a poor exchange rate. A Canadian penny that was expected to pull in as much as $300,000 at an auction in New York was bid up to $402,500 at an auction Sunday, according to The Edmonton Sun.

But this isn’t just any penny. It’s a 1936 Canadian “Dot Cent,” a penny that was produced in 1937 with the image of King George V and a dot on the back to denote that even though it was dated 1936, it was actually pressed a year later.

“This is the rarest, the most valuable, the most charismatic and legendary Canadian coin that exists,” Cris Bierrenbach, director of international sales with Heritage Auction, told Canwest News Service. “In Canada, there is nothing that is worth more individually than the 1936 Dot Cent.”

There are only three of these pennies believed to exist, and this one is in the best condition.

According to Heritage Auctions’ description, “the 1936-dated Dot cent has seen its reputation grow exponentially since its discovery. It was long considered essentially uncollectible, since noted numismatist John Jay Pittman had held all three known examples from 1961 until his death, but the three-part auction of his collection brought all three back onto the market: the first in October 1997 and the other two (including this piece) in August 1999. The three 1936 Dot Cents, now well-scattered, generate great excitement whenever one appears on the auction block.”