Cartier unique burgundy spider dial Musde ladies dainty vintage watch

Vintage ladies Cartier watch, it is a rare watch with the burgundy spider dial Musde watch face. Clasp is detached and needs a professional clean, also may need a new strap. I have the clasp which I know is worth 1k alone.
It was inherited from my late MIL.
Once cleaned and new strap will sell for 5-7k.
Cartier charge 500-750 for the clean
New strap 100-300 which includes reattaching the clasp.
I would ask 5.5k for this piece but due to needing cleaning and strap it will be reasonably less
Anyone who knows Cartier will understand what I mean

Photos do not do it justice as it is hard to catch the spider dial in the light