Yep, my understanding is these were from the same Bonati Brothers plant that owned the Ciocc brand and built several other brands under contract. John was one and if that flag braze-on is an air-tight clue then Concorde and even a few Guerciotti and Bataglin made have come out of their plant. With that BB shell piercing the Ciocc connection is pretty certain for this one and I own a late-model Ciocc with the same seat cluster as this. I predict you'll really enjoy the ride! Congrats on a fine job with a great find.