Great Britain, 1840, 1d Black on Cover, Mulready Used, #1 with small to ample margins, red Maltese Cross cancel, "My 20 1840" Cambridge postmark addressed to Bath, stamp with small flaws; also including 1d Mulready, red MC, Bath My 23 1840 cds on reverse, slight edge wear & small tear on backflap, still F.-V.F. SG No. 2. Scott No. 1  Estimate $150 - 200. $0 (Image)