1867 (Aug. 28) Belle Plaine, Minn. to Potsdam, Prussia, orange buff cover bearing 15¢ black (77), tied by target cancel, matching "Belle Plaine, Aug 28 '67" cds at left, endorsed "Per Prussian Closed Mail" at top, black "New-York, Am. Pkt. '23' Sep 5" debit exchange cds and "Short Paid" framed handstamp, large Prussian "13" sgr. due rating; some edge wear, F.-V.F., an attractive short paid Prussian Closed Mail use. Estimate  $400 - 600. $0 (Image)