Job Lot, 1000's of Vintage Model Train Decals, GWR, Parcels, LNER, LMS, 901

I do not know much about train decals, so not sure what scale they are. These are 'waterslide' decals, they are over 30 years old, but seem to be okay, I have tried them by soaking them off in water and they seem to stick okay, but very fragile.