the 30 year span 1875-1905 showed 3 groups of postmarks : ANT antiqua - LAP lapidar and BRO (bridge-comb) cancels. plates are known in each group - DKPM archive or private plates. yet many are still unknown ...
the middle period 1885-1894 is my focus ... medium circles Kobenhavn offers most PMKS for study... the 4DYD are uncommon ... e.g. 1878
22 plates are unknown ... but TOFDATA aids in plate reconstruction
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