This is a great thread. So much information, amazing research. I was wondering why someone doesn’t prepare a visual document of all the hyposprays, calling out their differences, and their appearances. It’s a little hard to parse all the minutia when it’s contained in text descriptions. Just to be clear, I’m not volunteering. Someone who’s good with Illustrator, would be best. Just an idea.
But, I thought I’d post this image from a project I’ve started, which begins with following Sternbach’s original design (thanks for posting that!). When I’m happy with it, I’ll move on to a version as-built. I’ve started a separate build thread for the details.