used 1850 (1 July) "Cotton Reel" 12c. blue with thick frame showing break over first "I" of "BRITISH", a cut-square example with light unclear initials and showing remains of wafer seal on reverse, neatly cancelled with part Demerara c.d.s.; two areas of brown staining, though a presentable example of this rarity. S.G. 5I, #4000.