SG 297 6d Dull Purple M33A (1) in lightly mounted mint condition. Very keenly priced to reflect the single toned perf tip to the right margin.

This the non fluorescent ink version on this highly complex value and printing where even the Concise umbrella listing of 297 covers a large range of options understood by few. You will need to have and use a long wave UV light if you are to have the slightest chance of getting more than a random few correct!