So there are 1000 charms and you want the one you can't find, LOL. Most people that steal our files crop out the SC watermark and rename them. If you could find a photo that still has the original file name, you'd have a clue because it would give you the first 2 characters of the charm's name.
I recently created a profile on Vintage Erotica Forum just to promote this site. There seem to be a lot of forum questions there just like yours. Someone will post a group of pictures pulled of the web with a question about who is the model. You could try there.