And to finish up that Japan Week, I have received these stamps from FinnBadger (the USA), issued jointly by the US Postal Service and Japan Post on April 10, 2015. The stamps feature images of flowering dogwood and honour the connection between both countries on the centennial of the gift of dogwood trees from the USA to Japan in 1915. More information about this issue.
In 2012, the USPS celebrated the centennial of Japan's original gift of cherry blossom trees from Tokyo to Washington DC with the Cherry Blossom Centennial Forever stamps. I also received them:
This is also a post for Sunday Stamps II. The theme today is Flowers.