GB KGVI 1941-42 2d pale orange with Control Letter K42. Cylinder 24 no dot.

SG488. Mint block of 6.

Looks to be unmounted mint but mounted in margin - please see photos before bidding.

I am breaking down my collection of 37 years and have several hundred control numbers singles and blocks that I'm gradually putting on here. I will happily combine postage for multiple items.