I saw a movie on TV, where a giant bell was the objective of an ancient army

The bell was the objective. In trying to get the bell, from memory, it rolled down the hill it was at the top of. It was almost 50 years ago so my memory isn’t great, but I seem to remember it was set in historic times which could have been ancient or near to ancient, with sailing galleys.

It would have been on TV in the early 70’s so potentially was one of those lavish movies set in ancient times from the 60’s, with not much store placed on accuracy.