SG 8tr Bs 18 Mullingar Blue cross With Mike Jackson Cert Extremely Rare Letters DG
JK0069 SG 8tr. Bs18 1d Red plate 29 with Mullingar Maltese cross in blue three margins small faults but exceedingly rare this blue ink was only meant for date stamping. Accompanied with Mike Jackson cert. Never seen one with this Blue ink only mixed ink .