This pic shows two styles of NOS Model A Ford emergency brake rod adjusting clevises. Both are part number A-2865. The open forged steel style is the most typical one found in my experience, however I have seen a couple of the solid steel versions also, including these three NOS ones from dealer stock.
This shows the A-2865 part number evident in the forged version. The original Ford parts books refer to the open forged clevis as A-2865-A. I have not been able to find an illustration of the solid clevis in any of the parts books, though I know I have seen it once in some Ford illustration.