Lanvin maxi skirt Vintage piece Stunning

This is a vintage 60’s Lanvin skirt. It’s in excellent condition. Fabric to me looks like it’s literally new and is just breathtaking. The leather has a crackled look. Also has a zipper that goes all the way down in the back. I got this from another wonderful posher and she got this super rare piece from England from a collector. There isn’t another one like this !! Tag was lost. This would be a size xs. Waist in about 24-25 on this.