I have one of those on my Hack.
Ohio county, Kentucky. A bit confusing.
Never saw or owned one that suffered from flapping fenders (never went fast enough?)so I question the need for it. I have seen pictures, on the Forum, of cars with bags of feed or grain piled on the fenders and that brace would sure help with that.
I have seen the straight ones but not this. It has an interesting front spring hanger arrangement with both the early two u-bolt and later one piece hanger.
My 23 came via Grandpa Ludwig with the straight ones. They rub on the top of the left headlight and a little on the radiator shell. I like the bent ones. I don't think I really need them as I'm not driving across the prairie chasing sheep like he did, but they were on it when he used it and I like them as an accessory.
ARG, Atlanta GA, made those fender supports that fit over the headlamps....I have two on my T's..they work to keep the rattles down, but now hard to tell the road speed, as always used to look for fender flutter over 30 mph