One can not really be sure on the sun catchers shown.
Have seen them many times on the Internet and also here in Denmark, but I do not have the type in any catalogue from Holmegaard.
The sun catchers that I call Noah’s Ark with a simple boat with animals (giraffe, elephant and so on) are from Holmegaard Glasswork and designed by Michael Bang in 1967 together with a range on Letter-Weights.
That do not means that you sun catchers is not Holmegaard but I have never seen them i any Holmegaard catalogue, could be after hours work by glassworkers as well og from source, it is hard to.
You can explorer my website "Brugsglas galleri" Art glass gallery for "Platter" way down alphabetic under P for Plates.