Had to look it up. It's a Saturnus Pot. Designed by a famous Finnish industrial designer made by Rosenlew.
Timo Sarpaneva designed his Saturnus pot with rings around the edges. The rings had a tendency to break in production but Sarpaneva didn’t want to change it. Another designer, Erkki Linnala, took him out for lunch to persuade him to change the design and threw in a fair amount of drinks to sweeten the deal. They decided to change the rings into solid handles (pic attached). Jeff's post shows the original rings. You can see why they would break.
Timo designed the iconic casserole with a wooden handle in 1960. It was awarded several times, including the silver medal at the 1960 Milan Triennal. This pot is an excellent example of the ability of Finnish design to combine practicality and beauty. Enameled inside, it has outstanding cooking characteristics and will also attract attention as a serving dish. The detachable wooden handle that allows you to lift and move both the pot and its lid is a true stroke of genius. The casserole has a great innovative idea that the distinctive-curved wood is not just a handle of the pot but can also can be used as a tool to lift the lid. (to be honest, if I had seen just the casserole and handle, I would have guessed Japanese)
Thanks again, Tommy, for your question. Opened a whole new window on cast iron design.
Just learned of a buyer beware. The Sarpeneva designs are now being made in China. Sold under the name iittala. Not cheap, $250 for the 3 Qt, but not Rosenlew.