Denmark – back of the book issues

Military
 File:Denmark 5o military.jpg|1917 5 øre value File:Denmark mili post due.jpg|1921 10ø postage due 
 * In 1917, 5 and 10 øre definitive values were overprinted S F for use on soldiers' mail.
 * In 1921, the 10ø definitive was overprinted PORTO / S F for use as a postage due.

Newspaper
Stamps of both issues were later surcharged with POSTFRIM. and new values for use as regular postage.  File:Denmark news 5ore.jpg|1907 5ø value 
 * In 1907, stamps inscribed with AVISPORTO / MÆRKE were issued, perf 13.
 * In 1914-15, the design was released on crosses watermark paper, perf 14x14½.

Official
 File:Denmark 2sk offic.jpg|1871 2 skilling value File:Denmark 8o offic.jpg|1899 8 øre value File:Denmark 1919 15ore offic.jpg|1919 15ø value 
 * In 1871, stamps with the national coat of arms was issued, inscribed TJENESTE / POST / FRIMÆRKE. and denominated in skilling. These are perf 14x13½ with the 4s and 16s also perf 12½. Reprints of all three values exist imperf on unwatermarked paper.
 * In 1875, new currency was introduced and stamps were now denominated in øre.
 * In 1899-92, colors were changed slightly and these were now perf 13.
 * In 1902-06, the watermark was changed to the wider crown type.
 * In 1914-23, more values were added and the watermark was changed to the crosses type.

Parcel post
Parcel post stamps were used for two ferry routes beginning in 1919. øThese were allowed to be used on letters until June 1919.  File:Denmark Christian X parcels.jpg|1927 15ø value File:Denmark 1.25 arms parcels.jpg|1950 1.25kr value 
 * From 1919 to 1955, various contemporary definitives were overprinted POSTFÆRGE. This included the Christian X portraits, wavy lines/numerals, sailing ship and Frederik IX portraits. Arrangements differ according to catalog and album, so we leave sorting to whatever system you care to use.
 * The 1950 1kr brown and 1965 1.25kr orange coat of arms definitives were similarly overprinted.
 * In 1967, the 40ø and 80ø Frederik IX profile definitives were similarly overprinted.
 * In 1967-75, various contemporary definitives were also overprinted POSTFÆRGE.
 * In April 1977, use of parcel post stamps was discontinued when the ferry system was taken over by the state railway.

Postage due
Postage dues overprinted FERIE ("vacation") were non-postal, instead used to record accumulated vacation pay due to workers.  File:Denmark 20 PORTO due.jpg|1921 20ø overprint File:Denmark 7o typo due.jpg|1930 7ø typographed File:Denmark due engraved.jpg|1934 2ø engraved value 
 * In 1921-34, several wavy line/numeral and Christian X definitives were overprinted or surcharged PORTO. The 10ø with additional overprint S F was a postage due for use on soldiers' mail.
 * In 1921-55, a numeral series was issued, inscribed PORTO at the bottom. It was typographed with the background of the numeral solid.
 * In 1934-55, the same design but engraved was issued. The background behind the numeral is made up of dots.

Special fee
Scott calls these Late fee stamps.  File:Denmark Gebyr ovpt.jpg|1923 10ø overprint; always overprinted twice File:Denmark 5o Gebyr.jpg|1934 5ø value 
 * In 1923, a 10ø postage due was overprinted GEBYR twice.
 * In 1926-30, two stamps were issued inscribed GEBYRMÆRKE, perf 14x14½ and with the crosses watermark.
 * In 1934, two values were issued in the same basic design, perf 12¾ and unwatermarked.

See

 * Denmark

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