Artillery dative (viewfinder) ????

[dredon]

Hello!
I'd like to know your opinion about this viewfinder, what weapon does it come with and how much can it be worth.
http://img134.imageshack.us/my.php?i...0081590co5.jpg
<img src="http://img134.imageshack.us/img134/1694/150081590co5.jpg" border="0" alt="Image Hosted by ImageShack.us" />

http://img266.imageshack.us/my.php?i...0815901sc2.jpg
<img src="http://img266.imageshack.us/img266/4601/1500815901sc2.jpg" border="0" alt="Image Hosted by ImageShack.us" />

http://img294.imageshack.us/my.php?i...0815902iv4.jpg
<img src="http://img294.imageshack.us/img294/989/1500815902iv4.jpg" border="0" alt="Image Hosted by ImageShack.us" />

http://img343.imageshack.us/my.php?i...0815903zt9.jpg
<img src="http://img343.imageshack.us/img343/947/1500815903zt9.jpg" border="0" alt="Image Hosted by ImageShack.us" />