Novelty was an early steam locomotive built by John Ericsson and John Braithwaite to take part in the Rainhill Trials.
It was an 0-2-2 locomotive and is now regarded as the very first tank engine. It had a unique design of boiler and a number of other novel design features (perhaps explaining the choice of name). Unfortunately, several of the major components had significant design weaknesses which ultimately resulted in its failure at the Trials.