#1/11, 1849/61 King Leopold I imperforates, a select group of ten singles and one pair, all four-margin examples, includes #1, 2, 2a, 5, 9, 10, and 11, note milky blue shade of the 20c, centrally-struck "Termonde" c.d.s. on #9, bold "85" numeral strike on 10c pair, one #9 may be unused, attractive and chiefly very fine. (Image)