Mystery Seed Swap Marigold

Found a handmade seed envelope in my seed collection just marked "Marigold." Realized it was one I got at a seed swap years ago and never planted. Grew them out this year mixed in with some zinnias and a few plants grew. Plants are about 18" high with medium-sized clear yellow flowers - very pretty! It's kind of in between a larger African-type marigold and the more petite French-type marigold.