Today I found them for sale on a German dance supply website.The Merlet Lington is advertised as a strong pointe shoe and made specifically for male dancers who do pointe work. Sizes start at a European size 42 which is a size 8.5 men’s street shoe size in the United States.
Another mystery about this model is the fact that several French female dancers claimed that the Merlet Lington was their favorite pointe shoe. That makes me curious about whether this model was created for male dancers and female dancers with larger feet liked them, or whether they were originally created for female dancers and are now being sold as mens pointe shoes because the only available sizes left are the larger sizes.
You can read about the Merlet Lington by visiting this German website.