Fraternal Twins

This puzzle has two identical pieces, each made of eight cubes:

Join them to make a shape with mirror symmetry.

This puzzle was inspired by a remark in a draft of a slide presentation by Donald Bell. It implied that two identical pieces cannot form a worthwhile symmetry puzzle!

Here is a set that I made from wooden cubes, glue, and acrylic paint:

Brian Menold of Wood Wonders Online offers an elegant hardwood version of Fraternal Twins for sale.

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