However, based on the style and details of the jacket, it is most likely a classic biker jacket from a high-end brand like Belstaff, Schott, or All Saints.
Many fashion blogs and articles have speculated about the jacket's origin, but without confirmation, it remains a mystery.
If you're looking for a similar jacket, you can search for "men's black leather biker jacket" online or in stores and find a great option that matches your style.