East Cleveland PD marked M&P, made in 1955-56, just one year prior to the 10 designation, so it's a very late M&P. 5" with a round butt makes this a great handling gun. East Cleveland was(is) apparently a very tough town and this is one of those "if this gun could talk" stories, but we'll never know what this gun has seen on the streets of what was once one of the worst cities in the US.