Adding more images, starting at the top
Afganistan issue of Dec. 23, 1951
Bosnia and Herzegovnia Semi_Postal issue of 1915
Brazil issue of 1891 - frame inverted
British North Borneo issue of 1886
Cape Verde issue of 1877
Same error, issue of 1881-85. Perf and imperf.
Cape Verde 1881-85 error overprinted Guine, issue of 1881
Columbia - State of Antioqua, issue of 1902
Columbia - State of Tomila, issue of 1886
Lithuania issue of 1922
Looks pretty normal, but this is the normal issue
Puerto Rico issue of 1882-86
Puerto Rico / Phillipines issue of 1898
Rio de Oro issue of 1905
Romania issue of 1893-98
Serbia newspaper issue of 1911
Turkey issue of 1865, 1 instead of 10 in corner value tablet
Here are some not everyday errors. (Original Post)
US #505, relatively common on eBay
, but here used on a non philatelic cover. Used in pair with normal along with a 9 cent Franklin to pay 13 cent registation rate.
Afganistan 1960 Buzkashi issue. Cliche of 25 Pouls in sheet of 50 pouls.
Cameroun issue of 1925-38. Cliche of 2 Franc in sheet of 5 Franc.
Hungary issue of 1913-16. Cliche of 35 filler in sheet of 5 filler. This issue could exist used but is not listed as such by Scott.
Hungary issue of 1924. 800 inserted in cliche of 600 krona. This stamp should exist used, but I have yet to see one.
Iceland issue of 1902-04. Cliche inscribed "Pjonusta" (official) in sheet of 20 Aur. This is a little puzzleing as the official stamps of this type were multicolored which should mean 2 different printing plates.
Serbia King Peter on the Battlefield. Issue of 1915 SG 179c + 179ca. Cliche of 15D in sheet on 25D. No longer listed by Scott.
Syria issue of the Arabian Government 1919-1920. Cliche of 2/10 pi in sheet of 3/10 pi.
Yugoslavia Postage Due issue of 1921-22. Cliche of 10 Para in sheet of 10 Dinar.