Cleaning a 40 y.o. Polaroid

[austin2k]

I could use some tips on this one. It looks to be a 5x7 color Polaroid about 40-45 years old.

I've enhanced the dirt on this pass:
http://davidweaver.smugmug.com/photo...0_U6zSP-XL.jpg


http://www.polaroid.com/studio/storage/PDF.pdf

Polaroid suggest cleaning the film off of a print with mild vinegar. Has anyone done this? What do I recoat the image with as the emulsion beneath is very fragile?

For me, too much color information is gone but I could turn it back into a nice sepia image.

I've my share of restoration work but I haven't had to deal with this much dirt and this is my first old Polaroid.

Thanks,
David Weaver
www.weaver.net

[ontwolf]

could you provide a untouched photo please

[austin2k]

Ummm...I added some blue to better show the dirt and damage. It does a better job of showing off the smudge coating.