Originally Posted by
Geri B
Why, if it had been washed in dishwasher, there is no hope of removing the film?
As Geri mentioned if it has been washed in a dishwasher at some time it will not be a "film" which can be removed it will be etched by a combination of strong chemicals and super hot water. Dishwasher detergent/tablets are very alkaline and should not be used for decorative/antique/expensive/fragile objects.