I say that mechanism was dropped onto the wreck site centuries later off a different ship. Sunken Civ disagreed
It was encased in enough sea-critter goo as to not be possible to be a new addition to the wreck, if I understand it correctly. It matched all the surrounding wreck material, or would have been identified as something newer.
Still, even if it was newer than the original wreck- it had to be hundreds of years old.
They found it in the early 1900’s and did not even know what was inside until the invention of X-Ray machines.