Condition Rank: S
It appears to have been stored unused. Perhaps due to the nature of the material. If you look closely at the white sole. There are some dark. Extremely fine dots of marks here and there, but overall it is in good condition. There are some small crack-like scratches on the outsole.
M2503-07-800630km
CELINE
Slip-ons
Men's
L***** (It is white in the image)
MADE IN SPAIN
Material: Canvas rubber
Color: Gray. Dark blue. Brown. Etc.
43 (29 cm (11.42 in). Refer to manufacturer's HP size guide) Outsole total length. 30.3 cm (11.93 in) Outsole maximum width. 10.8 cm (4.25 in)
Accessories: Box booklet

Condition Guide:
S: Like new by the store's standards
SA: Almost unused, overall pristine
A: Excellent condition
AB: Great condition, minor signs of use
B: Good condition, signs of wear from normal use
C: Noticeable scratches, dirt, or signs of use
D: Heavily damaged or in need of repair