I do realize I am always saying, wipe all the vintage steel items down with mineral oil after you clean it and before you put it away. But caring for old metal ware makes it as important as dish soap.
Put the mineral oil in a small spray bottle, any bottle. As soon as the metal ware is dry, spritz and wipe, and put it in away. The oiled items can be wrapped in brown paperbags or wax paper before being put in the cupboard.
We used to keep our cast iron wrapped in brown paper bags in the cupboard. I may have to start doing that again.