This is the long machined dovetail plate supplied with the CR150. Having a 2nd dovetail mounted on top of the mounting rings will supply a convienent tube carrying handle and mounting/dismounting handle and a place to mount a "red dot" style finder higher off the tube.
This one has scratch marks where the bolt heads contact the plate on top and bottom and setscrew marks on both sides of plate where the mount set screw holds it.All these marks are unavoidable on any CR150.
Other than the marks, good condition.
$30 shipped. Check or MO.