Thank you for answering my two questions. I now know its "Pliers" by Ennio Capra and a butterfly by Akira Yoshizawa. Outside the list I learned the butterfly is the first model in "Dokuhon" vol. 2. Do any of you know Japanese and has access to the book? Can anyone please check if the name of the model is literally "Butterfly"?
Thank you in advance! Gerardo gerardo(a)neorigami.com