1953 QEII 5d, 8d, 1s Wilding Definitive Issue, Plain FDC, Long Live the Queen Slogan Frinton-on-Sea

6th July 1953 QEII 5d, 8d, 1s Wilding Definitive Issue, Plain FDC, Long Live the Queen Slogan Frinton-on-Sea. Very unusual Cover as the Date slug on the Slogan Postmark has two time stamps 7pm & 6.15am and no date. The cover also has a Frinton on Sea Essex cds cancel showing the correct date 6th July 1953. The Cover also has a Maritime connection as it's addressed to HMS Constance c/o GPO London. Very good condition.