Yes, It's a pole bean variety from France and Spain. My grandmother would bring them from Costa Rica when I was a kid. They are flat and can grow over 12 inches long. Typical pole bean taste but more rich and tender when cooked compared to our USA type of pole bean. Called Spanish Musica. Also known as Spanish Miralda. Here is a link you can read :
https://www.reneesgarden.com/product...spanish-musica