SG 206 4 1/2d Green & Deep Bright Carmine K34 (-) in fine and fresh unmounted mint condition with minor reverse gum bend noted and precluding here at least, the award of the Post Office fresh prefix.

Striking shade and of course technically an unlisted one as no fluorescent reaction under our best friend, the long wave UV light. To say I was surprised this one showed no reaction under UV is a huge understatement as it looked certain to be the scarce K34 (3) shade.

I will offer at a very keen price but should point out this shade is ironically far scarcer than the actual scarce fluorescent 206a that it does a fine job of impersonating and just epitomises once again the need to check everything under long wave UV or mistakes will be made.