I haven't seen another like it. I guess if you want fashion you have to pay. I hope those stickers come off, as you'd get stopped at the starting line for that BITD. If you search for folding bike helmets you'll see there's some very cheesy ones that are vaguely similar but uglier.

Some Giro helmets can be pretty close, if you get a black one and peel the stickers off. That's what I did. I agree with the others though, a helmet is for safety. It's purpose is to protect your noggin. Modern good, vintage bad. Just deal with it and wear a modern one IMO. Today's drivers are rude, distracted and crazy. Anyway, the most authentic vintage helmet is no helmet, as has been noted. Hairnets were just to satisfy race rules.