1869/71, Coat-of-Arms 2 ½ cents lilac, tied by clear "ROTTERDAM FRANCO 10 NOV 75" to printed pricelist of stamp dealer A. Blokzeijl to Philadelphia. Paper in the folds partly slightly separated, otherwise fine. A scarce printed matter to overseas and a rare early item of Philatelic History.

1876, Numerals ½ cent rose, 3 copies, and 1 cent green, tied by c.d.s. "ROERMOND 7 OCT 80" to postal stationary card 1877, 2½ cent, with adjacent straight-line "THORN", to Mannheim with arrival mark. Very unusual and most attractive.
 

1872/1943, eight interesting covers and cards, with among other 1872 “Brief-kaart” with 1867 10 cent, Postal identity card with Queen Wilhelmina 5 gulden and Interned 1914 green vignette on retour cover to Anderlecht, etc, mostly fine 

1870/1961, group of five covers with postage due usages, including two covers with single usage of 1870 5 cent, unfranked German official letter sheet 1909 with 25 Cent on 2½ cent and official glassine postal administration envelope with 1894/1910 1 cent and 2½ cent, plus Dutch New Guinea Postage Due 10 cent tied on 1961 airmail official cover, overall fine

1871, post card 2½ cent violet with additional franking horizontal pair King Wilhelm III 5 cent blue, used with dotted “82” from “NIJMEGEN 12.SEP.71” to Cologne, Germany with arrival postmark, card with tiny tone spots and stamps with perforation faults, otherwise fine, rare pre-UPU franking

1878, double card 2 ½ cents violet (print on first and fourth page), both parts with additional franking 1867, numerals 2½ cents violet, used with long text from "MEPPEL 2 MRT 79" to England (same address on both parts), the stamp on reply part cancelled upon arrival "LONGTON STAFF. MR 22 79". A scarce and interesting card, supposed to be unique.
 

1871/75, lovely group of six used cards, among others one card 2½ cent with additional franking 10 cent rose used with cds. “GRONINGEN 16.SEP.73” to Bavaria and another card 2½ cent with additional 20 cent adhesive used from “AMSTERDAM 4.JAN.1875” to Milan, mostly fine

1877, postcard "12 ½ cent" on 15 cents grey, legitimately used with clear c.d.s. "PARAMARIBO 4/5 1877" to Cologne, Germany with manuscript receiving note. Little thins on reverse, otherwise very fine. In used condition an exceedingly rare card and the earliest recorded (4th day after issue). Certificate v.d.Vlist (2009)

1877/78, Posthorn 60 öre blue, tied by c.d.s. "HAMMERFEST 16.VII.87" to illustrated Nordcap - envelope of 'SS SVERRE SIGURDSSON' to Melbourne, Australia, with transit mark of Brindisi and arrival mark. Light transportation marks. A very unusual destination and Special Convention rate (“Italian-Australasian Treaty) of 60 øre to Australia through Italy). Rare.

1909, Haakon 2 kronor rose, 10 copies, together with Posthorn 30 öre olive-gray, tied by cs. “KRISTIANIA 1 I 15” to registered parcel tag with printed adress “On His Britannic Majesty's Service/ His Majesty's Principle Secretary of State for Foreign Affairs…” to London. One stamp slightly defictive, where applied over the edge, otherwise fine. An enourmeously high franking, thought to be unique.

1876/1945, 10 covers, cards and postal stationery cards including unused International Money Order, with among others 1877 5 öre blue on printed matter to Portugal, 1886 double card “Militzaert Tjestebrevkort” used and 1940 long format envelope with German censor mark “APNET VED TYSK CENSOR” on reverse, mostly fine

1867/70, Luis perforated, 10 reis orange, tied by dotted numeral "1" with adjacent c.d.s. "LISBOA 15/11 1868" to complete printed matter, privately carried from Buenos Ayres (stamp applied over the Argentine hand-stamped return address ), to Barcelone. A very fine and scarce transatlantic printed matter. Certificate Nucleo Filatelico (1997)