Cooling fan question

Hi All, before I hit this with the sand blaster for clean up anyone care to take a guess at what this stamp says? The number 58 is stamped into the front. It’s an all steel 7 blade fan, 18” diameter. Hope everyone is staying safe!

The front.

The white paint is "ENGINE SIDE"

Thank you Dave

Might want to permanently mark that someway to avoid any confusion later on. ( A center punch works well in a pinch)

I imagine the 58 is mark enough, just need to remember which way it goes though.