I'm looking to purchase a tang sight for a rifle that has been previously drilled on 1.125" centers and I don't want any more holes in the tang. The base needs to have the staff centered between the holes or very close to it. Ideally the staff angle should be 21° but I can deal with close and adjust it Also needs to be able to get short enough to have a 1.6" height above the base. Prefer it not be a long range type.
Thanks for looking!

I have this one. Came off a 1893 Marlin but also fit a 39a and an old Ballard #3 Gallery. Has some plier wear on the height adjuster drum but is otherwise all good. Looks to be the imroved version of what bpjack shows above. You can have it for $75 shipped.

John