This is a Shepherd V1 6-18x40. It has been mounted only on the rifle pictured. There will likely be slight ring marks when taken out, but other than that, it is in perfect shape. Glass is spotless, and there are no dings/scratches anywhere else.
$500 shipped/insured or FTF, doesn't matter.
Other than used ones, I have yet to find a place where you can get these scopes any cheaper.
https://tp-commerce.techpro.com/shepherdscopes/shopdisplayproducts.asp?id=1&cat=ScopesHere's a little info on how they work:
http://www.shepherdscopes.com/range.aspTheir website is full of useful information. They have some ballistics info that tells you which factory loads work with the reticles and to what distances. For example; load A matches up with the reticle to 650 yards, but load B matches up to 1000 yards.
This is what the reticle looks like: