Mrchntmarine
I have the attached decals which are old. Is the brownish area under the decals the paper/film or have the clear film turned? Are these still good? Or has the clear film gone bad?
The brownish area is the film, and it will show if used as-is, at least on any medium-to-light colored background. If you can expose the decal sheet for a few days in a sunny window, that may take the brown discoloration away.
But -- be sure not to tape the sheet directly against the glass, as condensation formed might damage the decals.
Cheers