Closest I could find is a new-old-stock, 4" Sony Watchman style B&W tube. No newly manufactured ones, and when I search a lot of industrial-style LCD displays c

Closest I could find is a new-old-stock, 4" Sony Watchman style B&W tube. No newly manufactured ones, and when I search a lot of industrial-style LCD displays come up. I think Thomas Electronics may be it in terms of new manufacture.