[ender341341]

> Its on such an expedition that the ring "slips" from him, further suggesting the ring is actually not only his size, but a little large.

It's heavily implied in LOTR that the ring is able to change it's size to cause itself to slip from a person's finger, though that's somewhat out of scope and the illustrator may not have read that.

[IAmBroom]

It's unthinkable that a single, unchanging ring size would fit both Sauron and Gollum.

[bombcar]

Sauron is known to shapeshift but maybe the dirty secret all along is that he’s hobbit-sized.