Walking through the garden center at Adams the other day I came across nearly the same exact tool, but made a little better. It's called the DeWit Cape Cod Weeder (the one shown at this link is a left-handed version, there is a right-hand one available, too). They had a whole range of tools including this cultivator, so we got one of each.
The tools are hand-forged in the Netherlands and they have a solid wood handle that seems like oak.
I'd love to get more. They are expensive, but they seem worth it.
There is a video here demonstrating many of the tools they make and sell.