From a photo of a real pre-NTI Apple-1.
S6820, gray plastic, “L” shaped lettered logo. 7601 date code.
Total # on board: 1.
From another photo of a real pre-NTI Apple-1.
From a photo of a real NTI Apple-1.
Same appearance as the pre-NTI version.
From a photo of a real prototype Apple-1. Ceramic with gold lid.
7645 date code, gray plastic, single-line lettered logo.
XC6820, 7548 date code, ceramic with gray lid and gold-plated legs.
XC6820, 7601 date code, ceramic with gold-plated lid and legs.
6520, black plastic, 7729D date code.