M Redon, Limoges Cup and Saucer-is it collectible?

I found this beautifully delicate cup and saucer at a local charity shop
The markings on the base suggest it's by M Redon, Limoges, and therefore dates 1891-1896
I think the pattern is 3557, which has been discontinued.
I can't find any further information about the piece, especially the very unusually shaped cup.
As I was planning on glueing the cup and saucer together and mounting them on my wall, I just wanted to make sure it isn't a very rare piece and valuable to collectors....I have no desire in damaging something rare or in demand by appreciators.
Thank you for your insight