"The Battle of the Century is a 1927 American silent short film starring comedy double act Laurel and Hardy, who appeared in 107 films between 1921 and 1951. The film entered the public domain in the United States in 2023."

https://en.wikipedia.org/wiki/The_Battle_of_the_Century

"Fight manager (Hardy) takes out an insurance policy on his puny pugilist (Laurel) and then proceeds to try to arrange for an accident so that he can collect. When a pie delivery man (Hall) slips on a banana peel, meant for the fighter, a classic pie throwing scene results."

https://www.imdb.com/title/tt0017664/plotsummary

https://archive.org/details/the-battle-of-the-century_1927

NB: One thought to be lost, apart from the reel with the famous custard pie fight, this is now almost complete.