This posting is for the benefit of the eBay seller who doubted that IBM T30 laptop computers were ever built in Mexico. Not only were such machines built, but Lisa has several of them. She likes the T30s, but she doesn't want to buy T30s that were built in China. We don't know the ins and outs of the various production runs, but it seems likely to us that early T30s were built in Mexico before the entire production was shifted to China.
Anyway, here is a picture of the base-plate of one of our T30s: You can click on this picture to enlarge it.
As you can see, this box was built in Mexico. Again, we don't know the details, and we can't point you to a specific manufacturing plant, but here is the proof that such things exist.