The marks probably came from stupid people hitting the bell with a carpenter's hammer or similar tool. They certainly didn't come from any proper usage of the bell! The only "normal" wear mark found on the outside of a bell is from a clock hammer, and that would be a single spot on the sound bow (the thickest part of the bell). If there is such a mark on this bell, it has been obscured by all the hammer blows.
Carl Scott Zimmerman
Saint Louis, Missouri, USA - home of 35 bell foundries or bell sellers, 1821-1961.