Alcatraz Island, commonly referred to as simply Alcatraz or locally as The Rock, is a small island located in the middle of San Francisco Bay in California, United States. It served as a lighthouse, then a military fortification, then a military prison followed by a federal prison until 1963. It became a national recreation area in 1972 and received landmarking designations in 1976 and 1986. Military prison Due to its isolation from the outside by the cold, strong, hazardous currents of the waters of San Francisco Bay, Alcatraz was used to house Civil War prisoners as early as 1861. In 1898, the Spanish-American war would increase the prison population from 26 to over 450. After the 1906 San Francisco earthquake, civilian prisoners were transferred to Alcatraz for safe confinement. By 1912 there was a large cellhouse, and in the 1920s a large 3-story structure was nearly at full capacity. Federal prison The United States Disciplinary Barracks on Alcatraz was acquired by the United States Department of Justice on October 12, 1933, and the island became a federal prison in August 1934. During the 29 years it was in use, the jail held such notable criminals as Al Capone, Robert Franklin Stroud (the Birdman of Alcatraz), Jose Sierra, Jim Quillen, James 'Whitey' Bulger and Alvin Karpis, who served more time at Alcatraz than any other inmate. It also provided housing for the Bureau of Prison staff and their families. Escape attempts During its 29 years of operation, the penitentiary claimed no prisoners as having ever successfully escaped. 36 prisoners were involved in 14 attempts, two men trying twice; Twenty-three were caught, six were shot and killed during their escape, and two drowned. The most violent occurred on May 2, 1946 when a failed escape attempt by six prisoners led to the so-called Battle of Alcatraz. On June 11, 1962 Frank Morris, John Anglin and Clarence Anglin successfully carried out one of the most intricate escapes ever devised. Behind the prisoners' cells in Cell Block B (where the escapees were interned) was an unguarded 3-foot (0.91 m) wide utility corridor. The prisoners chiseled away the moisture-damaged concrete from around an air vent leading to this corridor, using tools such as a metal spoon soldered with silver from a dime and an electric drill improvised from a stolen vacuum cleaner motor. The noise was disguised by accordions played during music hour, and their progress was concealed by false walls which, in the dark recesses of the cells, fooled the guards. The escape route then led up through a fan vent; the fan and motor had been removed and replaced with a steel grille, leaving a shaft large enough for a prisoner to climb through. Stealing a carborundum cord from the prison workshop, the prisoners had removed the rivets from the grille and substituted dummy rivets made of soap. The escapees also stole several raincoats to use as a raft for the trip to the mainland. Leaving papier-mâché dummies in their cells with paint brush bristles as hair, they escaped. The prisoners are estimated to have entered San Francisco Bay at 10 p.m. The official investigation by the FBI was aided by another prisoner, Allen West, who also was part of the escapees' group but was left behind (West's false wall kept slipping so he held it into place with cement, which set; when the Anglin brothers (John & Clarence) accelerated the schedule, West desperately chipped away at the wall, but by the time he did his companions were gone). Articles belonging to the prisoners (including plywood paddles and parts of the raincoat raft) were located on nearby Angel Island, and the official report on the escape says the prisoners drowned while trying to reach the mainland in the cold waters of the bay. The Mythbusters tested the myth that an escape is possible out of Alcatraz via this method. Famous inmates Robert Stroud, who was better known to the public as the 'Birdman of Alcatraz,' was transferred to Alcatraz in 1942. He spent the next seventeen years on 'the Rock' — six years in segregation in D Block, and eleven years in the prison hospital. In 1959 he was transferred to the Medical Center for Federal Prisoners in Springfield, Missouri (MCFP Springfield). When Al Capone arrived on Alcatraz in 1934, prison officials made it clear that he would not be receiving any preferential treatment. While serving his time in Atlanta, Capone, a master manipulator, had continued running his rackets from behind bars by buying off guards. 'Big Al' generated incredible media attention while on Alcatraz though he served just four and a half years of his sentence there before developing symptoms of tertiary syphilis and being transferred to the Federal Correctional Institution at Terminal Island in Los Angeles. George 'Machine Gun' Kelly arrived on September 4, 1934. At Alcatraz, Kelly was constantly boasting about several robberies and murders that he had never committed. Al

I found this silver dime metal detecting with my brother Mike in Sandusky, OH. I've found a few older pennies, but this is definitely the best coin I've found so far.