Japan Vertical Cover - The 1st in my collection

I have chosen a different style of cover from Japan to share today on the blog. It's a vertically prepared cover from Japan.

2 stamps used on the cover are a part of a set of 12 stamps, issued for "2015 UNESCO World Heritage - Tomioka Silk Mill and Related Sites".

While checking out these stamps at StampWorld.com, I came to know how many stamps Japan issues per year and how beautiful they are. Almost 504 stamps were issued in 2015 by Japan.