Oh no! I can see why you could have missed the crack before. One has to scrutinise to find it! But it really shouldn't happen for such a new (and expensive) bag. Like you said, if it's been a few years, I think that can be accepted. I have a Givenchy pouch that I used once and kept for a few years. The edge cracked despite unuse. I think it just gets... dry??? You don't want to let Chanel fix it? I think I read somewhere on TPF that TPFers use a product like Edge Kote to fix edges. So I think it can be fixed?
Aha! I can see now what you mean by smaller caviar grain! It made me compare my caviars too (I only have 2 haha). My WOC has similar caviar to yours! Smaller and finer grain. My boy's caviar is fatter and bigger. I have no preference after inspecting both. Love them both!

Do you have a preference?
Nice of you to buy her a Chanel bag as a present! She's going to be so thrilled!
Thanks for sharing! I'm going to order the Carbon Pro too! So your beige didn't change colour at all? Asking because mine is also a beige.
Beautiful choice! I hope you manage to get it from the boutique too! I might go tmrw. Will find out and update here!