Swiss 7.65 Luger Dummy

I just got the 7.65 Luger dummy on the right. The one on the left has been identified to me as a Swiss “Box Maker” dummy. I believe they are the same, except for the larger “primer” hole in the base. I had never seen this variation before. Is it also Swiss? Is there a particular reason for the difference?

I have the same two all-steel dummies, and I received each of them, at different times, with the information that they were box-maker’s dummies made in Switzerland. I assume this to be correct from the number of times I have heard this and the sources that gave me this information. However, I have no documentation for it.

Again we have the case of a caliber of ammunition made for over 80 years in Switzerland. My highest date on a ball round from Eidgen