about tubes svetlana winged c help

I don't know what those are but they are not NOS Winged C's. 
Look here (you can click on the photo to enlarge it) and check out the printing on the tube. Much different. 
https://tubedepot.com/products/sed-winged-c-el34?gclid=Cj0KCQjw5oiMBhDtARIsAJi0qk1altA6qKzgyas6k-h7F...
It the price is too good to be true.....