1-24, O1-O3. The Rigsbank and Skilling issues of 1851-71. Reprints: Edwin Mueller, “European Classics: x. Denmark”, Mercury Stamp Journal, Vol. 3, Whole No. 29 (February 1954): 100-12, continued from (Whole No. 28): 88, at pp.110-11. Unwatermarked reprints: Dr. Franz Kalckhoff, An Illustrated Catalog of All Known Reprints Of Officially Issued Postage Stamps, Envelopes, Post Cards, Wrappers, Etc. And How To Detect Them, pp.28,29; Scott Classic Specialized Catalog; J. Dorn (Publisher), The Forged Stamps of all Countries, p.29. See stamps and series below for more citations.
1,2. The Rigsbank issue of 1851. Reprints and forgeries: The Serrane Guide/ Stamp Forgeries of the World to 1926, pp.53-55 (Yvert 1,2). Two forgeries of the 2rs value and genuine postmarks: Reverend R.B. Earée, Album Weeds/ How to Detect Forged Stamps (Third Edition), Vol. 1, pp.332-335. Reprints: R. King-Farlow and J. Schmidt-Andersen, “Reprints of the Stamps of Denmark And Danish West Indies”, The London Philatelist, Vol. 59 (August 1950): 164-71. The 1885 reprints, Koefoed 1901 reprints: Berry Wood, “The First Issue of Denmark”, The West – End Philatelist, Vol. 33 (May 1940): 148-50. Characteristics of the genuine stamps and reprints: Hermann Schloss, Distinguishing Characteristics of Classic Stamps: Europe 19th Century (Except Old German States), pp.12,13. Reconstructed block of four with Burrus pair: Carl Aage Møller, “A Most Spectacular Reunion“, Fakes Forgeries Experts journal, No. 14 (April 2011): 37-40. 1886 Reprints: Edward Denny Bacon, Reprints of Postal Adhesive Stamps And Their Characteristics, p.34; Scott Classic Specialized Catalogue. The 2rs: Paper XXIII, Lowell Ragatz (editor), The Spud Papers/ An Illustrated Descriptive Catalogue Of Early Philatelic Forgeries, p.64.
3-8. The Skilling Issues of 1854-57 and 1858-62. Reprints and Fournier forgeries: The Serrane Guide/ Stamp Forgeries of the World to 1926, p.55 (Yvert 3-6 and 8,9). Forgery of the 8s, 1858 and genuine postmarks: Reverend R.B. Earée, Album Weeds/ How to Detect Forged Stamps (Third Edition), Vol. 1, pp.335,36. Characteristics of the genuine stamps and reprints: Hermann Schloss, Distinguishing Characteristics of Classic Stamps: Europe 19th Century (Except Old German States), pp.14,15. 1886 Reprints of the 2s and 16s, 1854-57 and the issue of 1858-62: Edward Denny Bacon, Reprints of Postal Adhesive Stamps And Their Characteristics, p.34; Scott Classic Specialized Catalog.
9,10. Rouletted Royal Emblems, 1863. Characteristics of the genuine stamps: Hermann Schloss, Distinguishing Characteristics of Classic Stamps: Europe 19th Century (Except Old German States), p.15. Two forgeries of the 16s and genuine postmarks: Reverend R.B. Earée, Album Weeds/ How to Detect Forged Stamps (Third Edition), Vol. 1, p.336.
11-24. Issues of 1864-68 and 1870-71. Unwatermarked reprints. The Serrane Guide/ Stamp Forgeries of the World to 1926, pp.55,56 (Yvert 11-15 and 16-21). Reprints of the issue of 1864-70: J. Alfred Birch, “Denmark: ‘Royal Emblems Issue’ 4sk: 1864-70”, The London Philatelist, Vol. 68 (December 1959): 209-11; John Agerup, “Denmark: The Royal Emblems Issue 1864-70”, The London Philatelist, Vol. 52 (June 1953): 102,03. Reprints of the issue of 1870-71: R. King-Farlow and J Schmidt-Andersen, “Reprints of the Stamps of Denmark and Danish West Indies“, The London Philatelist, Vol. 59 (August 1950): 164-71. The 1886 Reprints: Edward Denny Bacon, Reprints of Postal Adhesive Stamps And Their Characteristics, p.35; Scott Classic Specialized Catalog.
137. 80o on 12o, 1915. Forged overprint. The Serrane Guide/ Stamp Forgeries of the World to 1926, p.56 (1915).
138-54. 27o surcharged Newspaper stamps, Provisional issue of 1918. Forged overprint: Know Your Stamps, Vol.I, p16 (Scott numbers changed from 105-22). Alden C. Johnson, Forgeries Old and New, Vol. 1, p.12 (same change in Scott numbers).
400. 25k, State Seal type, 1962. Fakes made by joining portions of used stamps together to similate unused stamps for purposes of redemption, upon which they were canceled by the postoffice: Michael Schreiber, “Open Album: Tagging reveals patchwork in redeemed Danish stamps”, Linn’s Stamp News (April 30, 2007): 3.
Cancellation of remainders and genuine postmarks before 1884: Harry M. Konwiser, “Cancellations On Early Danish Stamps”, Stamps (U.S.), Vol. 17 (October 3, 1936): 28-30.
C1-C5. First Definitive Airmails, 1925-29. Varro Tyler, Linn’s Focus on Forgeries: A Guide to Forgeries of Common Stamps, Revised, Expanded Edition, p.84. Alexander F. Newall, Airmail Stamps: Fakes & Forgeries, pp.59,60 (Sanabria Airmail Catalogue 1-5). Michael A. Cline, “Denmark’s First Definitive Airmails: Broad Variety for Your Airmail Collection”, The Airpost Journal, Vol. 64 (September 1993): 377-84, at p.380. Anon., “Denmark: Counterfeits of 1925-29 Airmails”, The Aero Philatelist Annals, Vol. 4 (October 1956): 51,52.
J1-J7. Overprinted Postage Due Stamps, 1921. Alden C. Johnson, Forgeries Old and New, Vol. 1, p.12.
M1,M2. Military stamps, 1917. Forged overprint. H. Bynof-Smith, Forged Postage Stamps of Europe and Colonies, Vol. 1, pp.42,43.
O1-O3. Official Stamps, Skilling, 1871. 1886 Reprints of the perf. 14×131⁄2 stamps: Edward Denny Bacon, Reprints of Postal Adhesive Stamps And Their Characteristics, p.35; Dr. Franz Kalckhoff, An Illustrated Catalog of All Known Reprints Of Officially Issued Postage Stamps, Envelopes, Post Cards, Wrappers, Etc. And How To Detect Them, pp.28,29; Scott Classic Specialized Catalog, Note following O5. Also see “1-24, O1-O3“ above for more citations.
Q1-Q27. Parcel Post overprinted stamps, 1919-42. Forged overprint. Postage Postage Stamps of Europe and Colonies, Vol. 1, pp.42,43. Alden C. Johnson, Forgeries Old and New, Vol. 1, p.12.