The other day I wrote that there were only two known examples of 'siamese' issues - stamps that were issued by two countries simultaneously with both their names on them.

I indicated I didn't know what they were but would be interested to find out.

Ralph Ambrose, a member of the Joint Issue Society, was nice enough to e-mail me with the answer. He said, as far as he knew, the following were the only two known examples...

1965: Romania (Scott 1846) and Yugoslavia (Scott 769)
1996: Liechtenstein (Scott 1055) and Switzerland (Scott 960)

For more information on joint issues from Romania, click here.

For more information on joint issues from Switzerland, click here.