Karl did 15 cards plus 5 artist proofs.
Three images are double-card drawings.
In set 2 Karl did two versions of this Helena/Koenig image. He does it again for set 3- once in black and white, and in colour for his artist proof. As the following image shows, the four different versions can be swapped, each matching the other.
Space: 1999 copyright ITV Studios Global Entertainment
Thanks to Patrick Zimmerman, Karl Jones