An unknown number of George Washington dollar coins were mistakenly struck without the inscriptions "In God We Trust" and have made it into circulation.

Bailey said it was unknown how many coins didn't have the inscriptions. Ron Guth, president of Professional Coin Grading Service, one of the world's largest coin authentication companies, said he believes that at least 50,000 error coins were put in circulation.

"The first one sold for $600 before everyone knew how common they actually were," he said. "They're going for around $40 to $60 on eBay now, and they'll probably settle in the $50 range."

Keep your eyes peeled for those coins.  $1 coins worth $50 doesn't sound too shabby to me. 

Previously:
U.S. Mint launches first presidential $1 coin, Disintegrating Euro Currency