Vve. Jean Bertheau?

Does anybody know about this domaine? A relative of Francois or an older name for the same domaine? It appears to have produced Amoureuses and Bonnes Mares in the 60s and Coates has a kind note on a ‘64: 1964 Domaine Veuve Jean Bertheau Chambolle-Musigny 1er Cru "Amoureuses" (soiled labels, signs of past seepage) - SKU 1095502 but it’s hard to find any information and this image raises more questions than answers:

The Remoissenet vintage/neck labels are interesting. Do you suppose they marketed/exported it?