What's My Colt Worth?

[Neener Neener]

As many of you know, I am in the process of selling off some of my collection. This Colt is one of the ones I am going to let go. Problem is, I have no idea what to ask for it.

It is a series 70, has the adjustable sights added, as well as the Bar Sto barrel.

As you can see, it has some wear and will need to have the slide refinished if someone wants it perfect. The previous owner carried it SOB, causing the wear. That is no rust/fla

So, what should I ask for it?