[Amps] Identify the tube

[Hsu]

I just adquire this tube , could someone can tell me his specs?it seems a microwave triode.
   Thanks in advance. Hsu
http://www.zmdz.com/bbs/incomefiles/20167/2016071879364249.jpg
http://www.zmdz.com/bbs/incomefiles/20167/2016071879360793.jpg
http://www.zmdz.com/bbs/incomefiles/20167/2016071879355057.jpg
http://www.zmdz.com/bbs/incomefiles/20167/182215788469.JPG

Thanks in advance. Hsu