"
any stamp(s) that have/has been mass produced but now there is no known examples"
I know one
failed attempt to boost the market price of some stamps by removing surplus from circulation.
This is a cinderella stamp that is not rare but was produced by W.S. Lincoln, a London stamp dealer of the 19th century.

He had vast quantities of USA 1869 pictorial stamps which only saw usage for about a year or so before being replaced by a more popular issue. Despite him having "
the largest stamp shop in the world" he had not enough room for his unshiftable 1869 pictorials. He decided to burn VAST quantities of them to boost the price of the remainder. His first target was the 3 cent ultramarine of which 335,000,000 had been printed. Tens of thousands of stamps were placed in an incinerator where they smoked and smoldered... but refused to burn! The stock was then bagged and consigned to a cellar where 50 years later the shop's entire stock was bought by Stanley Gibbons in 1931.