If it is vachetta, vinegar is the best cleaner for it. Other cleaners or water will darken and stain it. I use Cadillac conditioner on my vachetta. Other conditioners may darken or stain. Is the signature part fabric or coated canvas?I like this style of bag. It's so cute! I thought about sending it back, but the inside still smells new and it is in fairly good shape. It would have been great had they not used such a small box. But it was a good deal.
Ok, I feel like I have a plan of attack. I hope I can get some of the stains off. I think some of it is color transfer, but some of it looks like the color on the leather has worn off. It's not bad but it's there. Can I also use Leather CPR and Blackrock on it after using vinegar? And in what order: vinegar, steam, then Leather CPR/Blackrock? I haven't had any experience with cleaning vachetta leather (if it's vachetta).