Want to Buy 4.5x6cm plate holders single sided metal about 51x75mm outside dimensions Plaubel Baby Makina

Hello,
Maybe someone here can help me with this.
I need some 4.5x6cm plate holders single sided metal. Not counting the dark slide they are about 75x51mm outside dimensions with no flange along the the long side.
Trying to use them on a Plaubel Baby Makina.
Photo attached.
Thank you!
Robert

Checked what I have, no match. I appreciate the challenge, as I have a 4.5x6 cm Ica Atom. Do you have a source of 4.5x6 cm cut film, or will you be using plates? So far I have cut down 4x5 in film.

Well, I've only got to find enough plate holders, find or make some film inserts, cut down some of the many sheets of 6.5x9cm sheet film and i'll be ready to shoot
Robert