Baden, 1862, 18kr green. Tied by five ring concentric "57" numeral cancel of Heidelberg on small 1864 cover to London; stamp lifted and and placed back, Very Fine, a wonderful and rare single franking usage; with M. Brettl attest. Michel No. 21a €8,000 ($10,960). Scott No. 24  Estimate $1,000 - 1,500. $0 (Image)