The cover has 2 stamps, the first is a definitive stamp and the second one is a special release stamp.
The first stamp is a part of "The Nature of Japan" definitive series released last 1997. This stamp depicts Koao-hanamuguri (flower beetle) and Kantou dandelion.
The second stamp is very interesting, it is a special release with the theme "Protecting the Arctic polar Antarctica" released last June 30, 2009. This is the first release of hologram stamps in Japan.
It is part of a miniature sheet of 4 stamps.
Inside the letter is a cute postcard.