I bought this item used. The yellow mark appears to be a manufacturing defect.
If Ampeg is your go-to name for amps, then these high-quality barstools, constructed from heavy-gauge 1 in. tubular steel with a chrome-plated finish, are a perfect compliment to your home, studio or gigs. The thick foam-padded seat tops consist of commercial-grade black vinyl and display a large, white Ampeg logo. The seats rotate on a 360-degree revolving swivel. The stools also have a foot ring for hooking your heels and non-slip rubber feet. 24 in. high.
Ampeg Studio Stool Short Features:
Padded Vinyl Seat with Ampeg Logo
24" Tall, Metal Frame
Foot-Rest Ring
Rubber Feet on Stool Legs
Chrome Plated Finish