Some more Sven Knudsen shapes, all for Larsen.
Shape 70 in the foreground, and a smaller version of the shape (no shape number) marked Flame Grain, which dates it to the very early 1960's in the background,
I've said it before, the three most important, most influential, Danish pipe makers work from the period, Sixten Ivarsson for Stanwell, Sven Knudsen for W.O. Larsen, and Gert Holbek for PipeDan.
For the after pictures of the Duck, see,
https://www.cooksfinepipeworks.com/sven-knudsen-duck-00122b