Saw this of Fleabay this a.m. Since it is not an auction but BIN it is up for grabs. Back in the day when I had a cup launcher for my Gew98s, would have been ecstatic to have ever seen or had a shot at one of these:
https://www.ebay.com/itm/WW2-Original-German-alidade-98/264302205414?hash=item3d89a399e6:g:7RAAAOSwNWFcxkW~
https://www.ebay.com/itm/WW2-Original-German-alidade-98/264302205414?hash=item3d89a399e6:g:7RAAAOSwNWFcxkW~