A Google search turned some up on eBay under an Antique Toys category, so the company that made them evidentally no longer exists.
In early 1960s, living 10 miles north of Pittsburgh, PA, I had purchased some HO-scale metal signals which looked great and were nicely detailed.
I especially liked their cantilevered RXR crossing signals, working semaphores and signal bridges which had 4 target signals. Each target signal had only one grain of wheat bulb - either red or green
(o) (o)
Were they made in Japan?
Available anywhere?
Thank you,