One day I was looking through a Japanese shopping website called buyee that let’s you buy stuff from Japan and import it to the country you live and while I was scrolling through the auction site I discovered an anime category where they were selling animation cels that was originally used for the production of these anime and of course there had to have cels from Lupin so as matter of fact I did find them and if you were willing to collect a bunch of production cels then here’s the link and y’all can go ahead and check out and carefully buy one of them because some of these cels are very expensive
https://buyee.jp/item/jdirectitems/auction/s1118009548?conversionType=yac_item_bottom_recommend_list
https://buyee.jp/item/jdirectitems/auction/v1189073143?conversionType=yac_item_bottom_recommend_list