This is limited edition Tom Kuhn, laser engraved on both sides, using his "Wood Rocks" yoyo as canvas. Only 48 of these were made, making it a very limited edition from Tom Kuhn.
The artwork was developed by Oke Rosgana and myself back in 2007. It was meant as a wedding gift for guests. But Tom Kuhn was out of production, and we could not get these made. The artwork remained buried away on my computer drive until 2013, when we were able to make them. The design was meant as a Nordik/Celtic design, sort of representing my family history.
The text reads "Tom Kuhn Custom Yo-yos Bifrost" in one of the Runic alphabets I found online. Originally the design was refused because it was said no one could read it and know it was a TK yo-yo. You might notice at center the tiny TK logo we added. Too tiny to make a difference. But rules on customs have eased since 2007 apparently.
Also, there was only meant to be one Bifrost design. Bifrost 1 happened because the engraver somehow, and accidentally reversed the center of the design, black instead of white on the graphics center. Bifrost 2 was run to deliver the design as ordered.