Hi Henry,
I've enjoyed your posts. This is our first time posting a picture to a thread, so bear with us if it didn't work. In any case we have a 46 grille center 51A 8259 that is not in the condition you desire, but thought it might get you by for awhile until you find a better one. It is not broken anywhere and is eminently re-plateable; however, the finish is hazy, there are quite a few scratches, and there is some pitting. The threads in the mounting posts look okay, but I did not put bolts into it to check. I did clean it up and I know you don't care about the painted part but I repainted it anyway just to check the condition of the letters. Let me know if this will help. Toby Lampert