From historic European issues to prized American rarities, here are 10 vintage stamps worth a small fortune. Time to start digging!

Keep your eyes peeled for the following stamps that could be worth a small fortune. Make Money: 8 things to do if you're barely scraping by financially ...

Block of 100 stamps for the Deutsch Neu Guinea (German New Guinea) 25 Pfennig. Overprinted with GRI 3d (3 pence) from the second printing. During the First World War, Australia administrated German ...

Block of 20 stamps from the Marshall Inseln (Marshall Islands) 2 Mark. Overprinted with GRI 2s (2 shillings). During the First World War, Australia administrated German territory in New Guinea. On 4 ...