The old wing nuts looked like that I believe also. It was back in the 90s but I had an A12 Bee and 6-7 AAR and TAs.6 or so V code Es. I just didn't think that much about the wing nuts!!
I didn't think about them either, just remember the 6 Pak wing nuts were different than my other stock air cleaners and the hardware store nuts I used on other stuff and I used on my other carb combinations. No idea what the "show judges" look for.
