Approximately 20 years of home storage. Both unused and used items are included. Discoloration and aging are present. Adhesive strength unknown. Condition cannot be guaranteed. Please be aware that this is an old item, so those seeking a pristine item should be cautious. No smoking, no pets. Waterproof packaging and shipped via post (no cardboard). We are considering selling in bulk during February. If no buyers appear, we will begin selling individual items from March.