All threads are DMC embroidery floss. There are 30 skeins in total (one extra). I received these after they were stored at home for many years. They are supposedly new and unused, but some may have fraying or fading. Please check the images for any fraying or other issues that I noticed. I don't think there are any duplicate numbers, but please refer to the images. 3756 has faded, so it's included as an extra. Recommended for those who want to try various colors. These have been stored at home for a long time, so please check carefully before purchasing. ⭐️ I plan to list other colors as well.