TL;DR: Valve's early Steam Deck prototype, "Engineering Sample 34," features a distinct design, a Ryzen 7 3700U APU, and a 720p display, differing from the retail model's custom Zen 2 APU and 800p ...

Opinions expressed by Entrepreneur contributors are their own. Working on a new product is always an exciting and risky process, even when you have all the data suggesting that the product is a win.

Serious Apple prototype collectors usually know exactly what they are looking for as they try to build a physical timeline of each distinct device ever made. A Holy Grail artifact would be an Apple I.