This is one of the designs described by Ferdinand Lammertink in 1996 in 'polyshapes'.
A symmetrical shape made from the complete set of 22 pentahexes.
Very few copies were produced by George Miller in 2003, this is one of them.
The design is mentioned and shown (along with the butterfly/hexominoes and heptominoes) by George on his website as part of a set: www.puzzlepalace.com/#/puzzles/200417
This copy is still in original shrink wrapping, in a tray measuring 20 - 22 cm.