[Ron Ramirez]

...if they had left over chassis then they would have just made a short production run of cabinets with the right sized holes in the right places.

Right.

I have a 201 chassis that was factory installed in a 200X cabinet. The cabinet has the original 200X sticker inside, and Philco placed a 201 sticker on top of the 200 sticker. Steve Geary (azenithnut on the other forum) was here some months back, and he brought along a 201 chassis. I had originally thought that mine was made when Philco stopped making the 200 and started making the 201. However, my 201 chassis has a higher serial number than Steve's, so mine must have been a case of finding a few leftover 200 cabinets after production was underway on the 201. Since the 200 and 201 have identical knob spacing, and the chassis are interchangeable, Philco just covered the 200X stickers in the cabinets with "Chassis 201" stickers and sent them out to be sold...