Thread: Anybody know about this Dubl Duck Dry Hone?

So my father received some possessions from this old couple that he used to know. Among the things he received were some straight razors and a peculiar hone. I got my hands on them, sent out the razors for restoration so I can use them this upcoming year, but now I'm stuck with this hone that I know close to nothing about.

The words on the hone read "Dubl Duck" and "World's Best Dry Hone." The hone doesn't look and feel deformed and is smooth all around except for a small chip above the logo. One thing that struck is how small it is. It is about 2" wide with a length of just over 4". Is there a recommended method of honing if I were to use this?

Can anyone give me some information on the hone and how it is used? Thanks, gentlemen