Hi Thomas and Floor
here are my three pieces.
I can't recall it clear but I read somewhere that Baptarosses had his beads decorated by a company (maybe Redlhammer?) in Gablonz.
The measurements of these three beads are:
Lenght x Diam - Perforation
29,8 x 23,9 - 8 mm
29,3 x 22,8 - 7,6 mm
60,1 x 21,7 - 7,1 mm
In the first picture both are the same bead
The perforation in the three beads have a small deviation (0,5 mm) on both sides

Floor, do you have a picture of the sample card of these beads without decoration?