Casement window lock handle

The photos show the window information, it's a casement window with the crank handle on the bottom and the lock on the side. the one picture is of the lock which still works, but is missing the trim and handle. Can you help me figure out if I need to replace the lock part or can I get a handle to fit the lock. By the way the window has two panes and both are missing the handles. The locks are located opposite each other in the center mullion.

The windows are Anderson windows.

Helder

Tom sorry for the bad picture. The window only has one handle per pane but two locks one above the other. will the lock that you suggested connect to the piece that controls the upper lock?

Thanks Helder