This link provides a lot of info about that pattern. It includes the page explaining how he does the post too.

https://books.google.com/books?id=ib...acklin&f=false

For keeping vintage hooks from rusting, I use Indicator Drierite at the bottom of an air tight container. When it's absorbed its fill of moisture, the granules turn from light blue to lavender. All you have to do to re-charge them is to put them in an oven on a shallow pan lined with foil for about an hour at 400 something F and they're ready to go again. I use a de-humidifier for the rest of my tying area and that works just fine for all my regular hooks etc. Rice will work, but you can't tell when it's spent.

Regards,
Mark