Ordnance Survey Map, printed on paper. Original, not a reprint. Scale: six inches to one statute mile. The map in the photo is the map you will receive. The map is stored rolled and will be posted out in a cardboard posting tube. The map is ex-public library and may have some library stamps or markings.
They are all of slightly different age. I have specified it where I can, but there are several that don’t appear to have dates, but from the styles of them, they all match the other ones that have dates in the 1940s.