General Post Office GPO 97 P postmans security badge

A good original circa 1958 to 1969 period 'General Post Office postmans security breast badge'; large brass example, wide black enamel band top and bottom, inscribed 'GPO' postmans identification number '97' and area code 'P'; the reverse impressed 'Reward of 1/- Will Be Given To The Finder Of This Badge On Handing It In At The Nearest Post Office'. Very good condition, no damage to the enamel, complete with original two loop fittings to reverse together with securing split pin, minor service wear.Height approx 44mm.