ok RM
Quadri Concept is a French editor head by Louis Becavin, old man today, who is no longer selling directly, nor on media or EBay since several years. My last meeting with him was in Paris 6 to 8 yers ago, when I bought hime half of his catalogue.
I see several way to attempt finding this flat:
1. Make a query on this forum to the members wwhic coold have one to leave to you .... But with Facebook, less members and visitors are coming on the site like all other forums, unfortunately...
2. Many flats are distributed in the USA (NY?) by The Little Tin Toy Soldier"; If you contact them, they cold try to contact Mr Becavin and negotiate whether it is possible to get one shipped to the USA?
3 Contact directly Mr Louis Becavin by email or telephone and nagotiate whether he has still some esidual inventory left in his premisses ...

I am not at home before two months minimum, so little access to my materials.
Best regards
Michel