LINCOLN -- For the second time in 10 days, 3rd time in 6 months, thieves target the Coinery in the Piedmont shopping center. Last night, an employee was locking up when a man with a hammer wearing black clothing and a white sock-like mask demanded the money bag. The employee refused, getting into a scuffle with the suspect. The masked man ran away without the money. The night of November 17th, surveillance video caught a thief stealing coins and currency from a display case. He's described as a white man, 20 to 25 years of age, just over 6-feet tall, 175 to 190 pounds.