What is unique or rare about the VM Zodiac signs?

[Paris]

I think I found an image similar to the one of Gemini.
Similar but not identical.

It's a stained glass window of the Notre-Dame Cathedral of Paris (first half of the thirteenth century) where the twelve signs of the zodiac are represented.

One of these windows represents the sign of Gemini :
   

The image of the manuscript is as follows:
   

The similarities are:
Both people are dressed
These two people are holding hands
Their arms are crossed
They have laced shoes

The differences are:
Two persons of opposite sex in the manuscript. They are same sex on the stained glass window.
The clothes are green and blue in the manuscript. Their clothes are red and green on the stained glass window