I'm afraid I didn't do the scanning. That actual scans I managed to get were better than you can see here, they still had the mould lines on! If they were printed in resin they would be nearly indistinguishable from the originals.
They were printed on a stock Ender 3 (okay I replaced the plastic extruder with a metal one, but that makes absolutely no difference to the print quality). I also used a 0.2mm nozzle and a lot of patience.