Yale 5 lever sashlock 3 keys (Whitehough SK23)

Sashlock to fit into a mortice in the edge of a wooden door and has a handle and keyhole. The length of the faceplate is 160mm with 68mm deep mortice. The backseat - distance from the edge to the line of the handle and keyhole is 44mm. That’s pretty standard. The lock is quite new and has 3 working keys. The brass handles are old but could polish up. Collection only.