SG 581 var.

Gibraltar 1987 Guns – £5 – 24 Pounder Gun – 1799′. Variety, ‘Central vignette, ’12 POUNDER – 1758′ for ’24 POUNDER – 1799’. (The 12 POUNDER -1758 vignette was only supposed to be used for the 22p. value). British Philatelic Association Certificate (2014). Superb unmounted mint.