I have an ivory calf leather YSL Downtown bag that I bought on ebay and it has some issues. The handles are in pretty bad shape where they were held as in the attached picture - there is an ink mark where it looks like someone rubbed it pretty hard - so there is ink and then an orange color around it (similar to where the handles were worn on the leather). There are a couple of scrapes and scuffs and some jean color transfer - although this is really light on the back. What can I do to restore this bag? Thanks.