A Delaware County jury on Wednesday convicted a 62-year-old man from Marion of attempted murder in a pawn shop, the prosecutor said.Sammy L. Johnson faces potential prison sentences ranging from 6 months to 40 years, along with fines, following his conviction for five felonies, including a count of aggravated battery, two counts of battery by means of a deadly weapon, and a count of intimidation.A Muncie police investigator, in a document filed …