Abstract
A family of neighbourly polytopes in R2d with N=2d+4 vertices is constructed.
All polytopes in the family have a planar Gale diagram of a special type, namely,
with exactly d+3 black points in convex position. These Gale diagrams are
parametrized by 3-trees (trees with a certain additional structure).
For all polytopes in the family, the number of faces of dimension m containing a given vertex A depends only on
d and m.