Am I missing something?
No I don't think so, but you could be adding to the knowledge base.
I looked at a dedicated La Sameuse perfin
and of the hundreds, none evidenced the VC on 40c blue.
The VC on the Merson seems "medium"
If anyone else has a VC on a 40c blue, I'd be delighted to see it.
Perhaps the "VC VC" is simply the punch format that suits the la Sameuse
singleton, and appears double on the Merson format.