From the auction listing:

Two original exterior office building signs, approximately 46 x 49 x 1 1/2 inches and 33 1/2 x 36 x 6 inches, each with separate stem piece; the larger sign made of stiff foam with 6 vinyl applied colors; the smaller sign made of fiberglass backed with metal, vinyl applied colors; edgewear to both signs, some colors with slight pealing at transitions, larger sign with one color showing significant craquelure, both with stray marks and outdoor wear.

Provenance: Removed from company headquarters in 1997 and given to a longtime Apple employee.

If only the original pirate flag was up for auction.