A transparent Newton MP110

Seen on eBay, a prototype Newton, housed in a transparent casing. The MessagePad 110 is a second-generation model, quite similar to the first Newton model.

Transparent prototype models are quite common at Apple in the 1980s and 1990s, and Newton devices of this type are sometimes found on eBay. The seller indicates that they acquired it about a decade ago from a flea market in Silicon Valley (an effective way to acquire prototypes and forgotten hardware).

The Newton and a charger

The back

The internal battery

The infrared

The front, with the protective cover