Someone claims to have an original photolithography mask for the Intel 8080.
https://www.tomshardware.com/pc-components/cpus/owner-of-original-intel-8080-pre-production-layout-seeks-restorer-handcrafted-rubylith-mask-shows-5-000-transistors-and-interconnect-patterns-of-the-fabled-2-mhz-cpu