![](http://www.ecns.cn/hd/2020/10/30/c63277934d444c5eb159c2b73732fe41.jpg)
So called "corona stamps" are seen in a post office, as the 2.75 euro "corona stamp" is printed on three-ply toilet paper and sold individually as part of a 10 cm wide sheet, in Vienna, Austria, Oct. 28, 2020. (Photo/Agencies)
![](http://www.ecns.cn/hd/2020/10/30/632f8d2694be405a96504a84d8482239.jpg)
An employee of the Austrian postal service stamps a so-called "corona stamp" in a post office, as the 2.75 euro "corona stamp" is printed on three-ply toilet paper and sold individually as part of a 10 cm wide sheet, in Vienna, Austria, Oct. 28, 2020. (Photo/Agencies)
![](http://www.ecns.cn/hd/2020/10/30/a695c9c4a70e483b96a9c70449ed0df2.jpg)
An employee of the Austrian postal service displays a so called "corona stamp" in a post office, as the 2.75 euro "corona stamp" is printed on three-ply toilet paper and sold individually as part of a 10 cm wide sheet, in Vienna, Austria, Oct. 28, 2020. (Photo/Agencies)