Watch “Doblón - Card game - Full rules,” a how-to-play guide for Doblón from Fabio Guerini Rocco on BoardGameVideo.
Description provided by Fabio Guerini Rocco on YouTube:

2023Guglielmo Duccoli, Fabio Guerini-Rocco
About Doblón, from BoardGameGeek:
Designers
Guglielmo Duccoli, Fabio Guerini-Rocco
Publisher
(Looking for a publisher)
Categories
Mechanics