The numbers "2" inside the pistol.
number in breech shows baddly in the picture:
<a href="http://boards.rennlist.com/lfupload/10006number2s.jpg" target="_fullview"><img src="http://boards.rennlist.com/lfupload/10006number2s.jpg" width="400" alt="Click for fullsize image" /></a>
(This photo has also been thumbnailed to appear...click on the photo to see the full size image. Admin-JS)