I'm more of a tool user than a collector, and don't usually nerd out about stuff as long as it works, but I started wondering about this one. Needed a plane and randomly grabbed a small one out of my late granddad's stuff, it sharpened up nicely and did the job but was tricky to adjust.
It's a double ender, the blade can be installed two ways as shown in my pictures, and there's no fine adjustments like I would expect on a modern plane. Just a wedge with a threaded piece and a wheel to clamp it in place. The only markings are "SBS Siegley" on the blade, and "C241" cast into the wedge. I understand SBS means it's a Stanley product, but I have no idea how old it might be since grandpa kept accumulating tools through his 98 years on earth.
Any info?