Restoring a ambulance w211

I am currently restoring a W211 E-Class ambulance and am searching for the specially manufactured rear lights equipped with emergency lights. I have contacted Visser, Miesen, BINZ, and Nordic Vehicle, but unfortunately, none of them have these lights available anymore.

If anyone knows where I can obtain them, please get in touch—I am willing to purchase them. I am also looking for the corresponding standby unit. I can provide images to clarify exactly which items I need; the one shown in the close-up is the specific unit I am searching for.

To be clear, I do not currently possess these parts, which is why I am reaching out.