Burlington, Colo., Dec 29, clear full cds and matching target handstamp cancelling on 1864, 3¢ pink entire to Philadelphia, Pa., receiving backstamp, Very Fine. Estimate  $100 - 150. Another stage stop was Burlington. On April 14, 1873 the post office was moved a short distance north to the agricultural colony of Longmont. It appears that this datestamp was transferred with the office and used until Longmont secured its own postmarking device. $0 (Image)