Correct me if I’m wrong, but I think I recognize the crimps and the material from TCA’s fake booster openings, as well as a listing on ebay Kleinanzeigen a year or so ago selling tons of them for really cheap.
Be aware in Europe and especially in Germany, because a lot of private sellers could have bought them back then.
www.ebay.de/sch/ene.sentr/m.html?_nkw=&_armrs=1&_ipg=&_from=