Project Matching Helmet is coming along.
The mid-50s crash helmets usually had detachable visors. As we have seen elsewhere, there's a guy in Costa Rica building painstaking replicas of those at an "Inquire" price point.
Those are very, very nice but for both budget and practicality I decided to roll with a good, vented retro-looking bike helmet, repainted and modded for an extended visor or "rain visor."
The one I chose has leather straps that could easily be used to frame the cloth ear and neck covering bits, and it even came with a carrying bag that feels like the right material.
After wet sanding and a few more coats of clear, I'll take a bit of leftover leather and belt weave material and finish this off in the proper style.