Otis A/ESB Otis B Clamp Cards
Meticulously recreated from a vintage Otis Elevator card, these have identical variously offset thin traces to the Otis card on side A, and "idealized" consistently centered thin traces on side B.
Screengrabs courtesy Seth Sherwood
Reference images courtesy of Matt Duley
This shows an original vintage Otis Elevator card above and the Slothfurnace replica below.
Available now at Slothfurnace.com