I seem to remember that 75-174 was a NAMM Show display. If only you knew when that was... 😄
I'm always wondering when the first this, or that was too. I think it's just part of the evolution of bodies... and at the time it was probably going straight from the drawing board to the workbench. The symmetrical Standard Point (like 72-001, or 73-27) had two Soft Horns , then came the altered lower horn more like a Small Standard, then some Omega-cut variants, and so on. I've never heard it said, but these may have been suggestions by players or customers, even dealers. For aesthetic preferences? I really can't imagine what it must have been like to work in that shop back then. Nobody had ever seen or heard anything like what they were doing, that was for sure, so on some level it was a clean slate to work with.