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Those are two old stones that will last a lifetime. They can be used on many edges tools. Get us a pic if you re-do the box.

Your not using them for razors or fine wood work, ,, so if they look flat & they appear to be from the photos don't lap them.
The threads you probably read on removing oil from them; probably...

They are manufactured that way & the only oil/lubricant you might pull out of them, is whatever was added by the prior owner. they are not meant to be rid of lubricant.

You can easily flush the...