USA 2 Cent 1901 with inverted center
Austria 2 Kronen 1919 with inverted center
India 4 Anna 1854 with inverted center
New Zealand 4 Pence 1899 with inverted center
Baden 9 Kreuzer 1851 on blue-green (error)
Sweden 3 Skilling 1855 yellow orange (colour error)
Mauritius 2 Pence 1847
Mauritius 1 Penny and 2 Pence 1847 on cover
USA 24 Cent 1918 with inverted center