Is such a thing even possible? Well, yes apparently. Back in 1978, acclaimed french film maker and magician Christian Fechner, filmed Slydini teaching many of his classic effects. From what I gather, no one had seen this footage but him and it became somewhat questionable that it even existed today. Thanks to the efforts of George Proust and the Musee de la Magie in Paris, you can experience for yourself a Masterclass with Slydini.
The set comes with some props, it looks like the large safety pins and the scarves for this classic Knot trick. I don't have a complete list of what is covered. There is a video which shows quite a few things. The price is rather high, but I imagine there was an incredible amount of work that went into preparing these videos for viewing. It also looks like, at least on the trailer, there may be additional footage of Slydini throughout his career. I don't know french, but I believe this set it presented on a USB drive, I think. You'll have to consult the add and the site for more information.
Here is the link to this magnificent new offering. https://museedelamagie.com/souscription-slydini-by-slydini/?fbclid=IwZXh0bgNhZW0CMTAAAR3e-CtT3P5VOLAXlkXflEVvn4TrQzN7Q-0i9NzwAqh6fIkru3NTNRKCSsQ_aem_AcFd2UEQ9QzbmzDpSwzti9wlRvRmu2wLZTDI-0RAsPRvcOtjzuOpDdd9NLvCX76RKmCkxQU-W4CevnfAFMaaNPps
