SG 456a 2½d Prussian blue. A superb unmounted mint example of this rare &

  

SG 456a 2½d Prussian blue. A superb unmounted mint example of this rare & famous error of colour. The item "SG 456a 2½d Prussian blue.

A superb unmounted mint example of this rare &" is in sale since Tuesday, April 2, 2019. This item is in the category "Stamps\Great Britain\George V". The seller is "steveallen777" and is located in Hampshire. This item can be shipped worldwide.