Found a Videodyne on CL

[Eric H]

This has the serial number of 1811, possibly the 811th of these made, depending on whether they started at 0001 or 1001. I would love to know what the production numbers were.

Sams has a Photofact for them so I would think it have to be a fairly substantial number for them to have bothered. I've had the Sams for it for years, never expected to need it.

Four stage i.f amplification plus DC restoration so it wasn't a stripped down chassis design.