So long story short, my father passed away some time ago... leaving behind quite the knife collection from the knife shop he owned... My question is this, I found hurried under a bunch of empty boxes, a hone, simply stating on its box, "Barbers Hone" and the same on one side of the stone.... Do I need use oil, or soak in water, or just go dry?!

Never seen one of these before, and honestly it's the most finest grit I've seen in my whole life! It's been well maintained, smooth as a baby's butt, and perfectly flat, it's almost new condition save for being the the age it is, box says 191* the last digit is worn off....

Any help or advice would be greatly appreciated!