8 sk 1854 utakket meget bredrandet på 4 sk. helsagskuvert sendt til Tyskland visende 12 skillingstaksten, der gjaldt for et brev til Tyskland 01/Aug/1865-30/Apr/1868. Helsagskuverter opfrankeret med utakkede skillingsmærker hører til blandt de klassiske sjældenheder i dansk filateli. DER KENDES KUN 13 HELSAGER OPFRANKERET MED UTAKKEDE DANSKE FRIMÆRKER! Det er det samme antal, som der kendes Hein-breve med 2 RBS blandingsfrankaturer! Her er der endda anvendt den tidlige 1854-udgave!

8 sk 1854 imperforate with very broad margins on 4 sk. stationery envelope sent to Germany showing the 12 skilling rate valid for a letter to Germany 01/Aug/1865-30/Apr/1868.ONE OF ONLY 13 RECORDED IMPERFORATED STAMPS USED ON A POSTAL STATIONERY This is the same rarity level as the famous Hein-covers with 2 RBS in mixed frankings with other stamps!

10 øre stationery envelope (KV 32 production number S-28) with value stamp and production number in blind print (should have been printed in red colour) uprated with 5 øre Chr.X on 16/Jun/1920 and used as a domestic letter. IT IS EXCEPTIONAL TO SEE A BLIND-PRINTED ENVELOPE GENUINELY USED! AND IT IS VERY INTERESTING THAT THE BLIND-PRINTED VALUE CLICHE IS COUNTED INTO THE FRANKING: Domestic letter rate 15 øre 01/Oct/1919-30/Jun/1920.

Blindtrykt 10 øre helsagskuvert opfrankeret med 5 øre Chr.X og sendt som landsportobrev 16/Jun/1902. Blindtrykte helsager ses ekstremt sjældent ægte brugte, og det er meget interessant, at det blindtrykte værdistempel er talt med i frankeringen på 15 øre, som betalte taksten for et landsportobrev i perioden 01/Oct/1919-30/Jun/1920.

2×3 øre print 17 with inverted frames as uprating of a 4 øre stationery envelope sent as a letter with COD to Sweden 21/May/1900. On 01/Jul/1892, UPU introduced simple regulations for international letter mail with COD. Letter with COD had to be prepaid as standard registered letters. No COD fee had to be prepaid. Instead, a COD fee of 10 øre plus the postage for the money order used to return the collected money to the sender was deducted from the amount paid out to the sender. However, Denmark made bilateral agreements with Sweden and Norway that COD letters should only be prepaid as standard, non-registered letters (UPU allowed neighboring countries to bilaterally agree on rates lower then the UPU rates!). Here is an example of such a letter!

Internationale postopkrævningsbreve skulle normalt frankeres som anbefalede breve fra 01/Jul/1892. Dette gjaldt dog ikke for PO-breve til Sverige og Norge. Her tilbydes et sådant almindeligt ikke-anbefalet brev med postopkrævning til Sverige.

25 øre print 10 as uprating on 10/8 øre stationery envelope used as a registered UPU letter to Charlottenburg, Germany 2?/Jun/1904.

25 øre 1902 ret ramme på 10/8 øre helsagskuvert.

4 skilling stationery envelope (KV 1) used as a letter with 3 Rd. 5 Mark Cask on delivery (COD) on 21/Jan/1866. Rate: 4 sk. for the letter + 4 sk. COD fee + 4 sk. for the COD form and a written receipt (4/4 in manuscript indicates payment of these fees in cash) 01/Sep/1851-30/Jun/1866. Stationery envelopes were only issued from 02/Jan/1865 and are therefore rare used for COD letters where the COD fee had been paid in cash.
ONE OF FIVE RECORDED STATIONERY ENVELOPES SHOWING CASH PAYMENT OF THE COD FEE

4 sk. helsagskuvert anvendt som meget tidligt COD brev.

10 øre stationery envelope used as a border letter from Kolding to Christiansfeld 05/Aug/1918. Rate: Letters sent between Danish and German border towns lying <30 km from each other 10 øre per 20 grams 01/Oct/1907-05/Oct/1919. Note the unusual local censorship on the back.

10 øre helsagskuvert anvendt som grænsebrev. Censureret. Smuk lukkeoblat fra Posthuset i Flensborg.

Beautiful 4 øre stationery envelope uprated with 2×8 øre 1875 and cancelled with old type star cancellation “Skodsborg”. Rate UPU letter 20 øre 01/Jul/1875-31/Jan/1921.

Smukt brev med Skodsborg stjernestempel sendt til Olpe i Tyskland.