Edison HOME Model B with 2/4 Minute Gears

[VintageTechnologies]

Actually, it's only the box that's part of the 2&4 minute Home B kit. The parts inside the box are from the Home B after the kit was installed.

That is correct. I have two of those thread/mandrel assemblies myself, one of them in the kit box just as shown in the picture. I read somewhere that those replaced parts were to be returned to the factory, but obviously that did not always happen.