I have a Safariland 1060 series shoulder holster that I would like to sell but I don't know what it is worth. I got it with a gun trade a few months back. I know for sure the holster holds a Glock 19. It has the mag holder on the opposite side of the holster. I have found a few pics online and from what I can tell this holster is missing the retention straps that should be connected to the holster and the mag holder. It does have the retention strap on the back. I simple want to find out if the holster is worth selling and if it is for how much. Can anyone help me out?