PAIR of vintage Champion Large plastic Spark Plug store display advertising

(Please see photos for damage). These vintage Champion spark plugs are a large Approx. 22″ high and 7″ wide at the widest part, plastic antique advertising piece from a gas station or other retail store, dating back to I think the 1960s. Made in the United States, these collectible items feature the iconic Champion brand, making it a unique and nostalgic piece for collectors. Both are dirty and can use some cleaning, both have some minor (in my opinion) paint loss. 1 sparkplug is cracked a little over 1/2 way around where the threaded part connects to main body.