The attorney for the Rev. Bernard T. Pagano, the Catholic priest on trial here for armed robbery, said today he plans to show that witnesses mistakenly identified Pagano as the "gentleman bandit" who robbed them. At his opening argument in the case this afternoon, Carl Schnee, Pagano's lawyer, also said he will show that the priest was somewhere other than the scene of the crime on the days the robberies occurred. Pagano, 53, is charged with holding up five small businesses in suburban Wilmington last January and February. He is also charged with one count of attempted armed robberty. Delaware State Police investigators had dubbed the robbery suspect the "gentleman bandit" because he was always dressed neatly, usually in a topcoat and hat, and treated his victims courteously. Both Schnee and Deputy Attorney General Timothy Barron, the chief prosecutor, stressed in their opening arguments that the jurors must not let the fact that Pagano is a Catholic priest influence their deliberations. Schnee told the jury of eight men and four women that Pagano fully cooperated with police during an eight-hour investigation following this arrest Feb. 27, and that he told police where he was on the days of the robberies. "It will be clear that Father Pagano's actions (during the interrogation) in every fashion were the actions of somebody being cooperative...of someone who's not guilty," Schnee said. Schnee said Pagano told police that his general schedule called for him to be in Cambridge, Md., Wednesday through Sunday at St. Mary's Refuge of Sinners parish where he was serving until recently as assistant pastor. The rest of the week he spent in the Wilmington area where he owns a home in the tiny community of St. George's. The robberies, Schnee noted, occurred on either Tuesdays, when Pagano was in Wilmington, or Thursdays, when he was supposed to be in Cambridge. Barron said the witnesses' identifications of Pagano as the suspect was the "key" to the state's case. He acknowledged that the money stolen - over $600 - and the weapon, described by witnesses as a tiny, chrome-plated gun, were never recovered. He said police found no fingerprints and have no confession to offer as evidence against Pagano. The first witness to testify was Doris Clough, who was robbed at the Oven Door bakery just outside Wilmington last Jan. 11. She told the trial that the robber brought a pacage of 59-cent buns to the cash register, pulled out a dollar bill to pay for them, then put the dollar bill back in his wallet, pulled out a gun, and asked for the money in the cash register. Clough testified that police twice showed her a group of photographs in which Pagano's picture was included, and asked her if she could identify a suspect. The first time she said she could not. The second time she identified a state a police detective as the man who "looked the most like the fellow who robbed me." She picked Pagano out of a police lineup after he was arrested and his picture had appeared in the local Wilmington papers.