Have an identical set in my GTA cold air box. The screens are brazed on and they are nickel plated. They are standard equipment for GTA Autodelta cold airboxes and they are the only curved ones that fit inside without modification. On manufacturer I have no idea but they look like very small batch production.
I hesitate to try and bring this thread back to carb trumpets….
Pictures attached are from a period race TZ, never seen a similar set before or since.
Beautifully made in steel, each pair has offset carb mounts to ensure identical and accurate mounting.
Any ideas as to the manufacturer or are they one offs?