Hong Kong-based ArtraLab has revealed that it will soon be expanding its handsome, retro-themed NONIKKOR lens line-up with a 24 mm f/1.7 pancake lens for both Micro Four Thirds and Nikon Z-mount cameras. The YouTube video that makes mention of the lenses suggests that the Z-mount version will be particularly suited for Nikon's APS-C cameras, like the Zfc. https://www.notebookcheck.net/ArtraLab-teases-fast-NONIKKOR-24-mm-f-1-7-retro-pancake-lenses-for-Nikon-Z-mount-and-Micro-Four-Thirds-camera-systems.735666.0.html
Wow, that's cheap for a 24/1.7 FF...indeed one would question if it would even sharpen up in the corners at f/4.