I am restoring a 1928 house in Madison, WI.

Our current project is a repainting of the exterior (we're actually pausing for the winter). As part of this project we are working on a cleanup/repair/replacement of our storm and screen windows.

I am looking for replacement hardware like the two pieces pictured. The hardware is needed for securing a wooden storm window onto a house.

The piece on the left attaches to the house, on the inside of the window. The piece on the right attaches to the storm window. By turning this buckle, the storm window is secured to the house. Each window has two of these (one on the left side, and one on the right side).

We have a lot of these. We could probably strip, paint, and reinstall a lot, but we are missing some of them. Any leads for sources would be greatly appreciated.