If I remember correctly, DK-2 is a numm. clone, with the main differences being that the coronas of the flowers are yellow instead of pink and that DK-2 does not drop its peduncles after flowering. Both repeat bloom, but numm. has to grow back its peduncles, whereas DK-2 doesn't. I think both the clone and numm. bloom just once a year, DK-2 blooms earlier in the year than numm. and since they are both technically the same plant, they both share the same fragrance, which is pleasant.