Chinese Imperial Post Coiling Dragon Stamp Collection with Overprint for Tibet. The face value of the stamp is in scripts in three rows: Chinese, English and Tibetan (top to bottom).
Chinese Imperial Post
<a rel="nofollow" class="external free" href="http://blog.sina.com.cn/s/blog_3d22f3770102vm7n.html">http://blog.sina.com.cn/s/blog_3d22f3770102vm7n.html</a>