In the Arrowverse crossover "Elseworlds" we see Lois Lane wielding a large hammer during the fight with the evil Superman/Deegan.
The hammer is first seen at the entrance to the Fortress of Solitude on Earth-38...
Given the number of references and easter eggs in the multi-episode crossover, I'm struggling to find a reference for this hammer.
It could be the hammer of John Henry "Steel" Irons but it does not seem to approximate the look of that object.
Is there a Arrowverse or comics reference for "Superman's Hammer" of which I am unaware