The Sentinel

Ominous Xenoartifact
65 mm tall

I can never look now at the Milky Way without wondering from which of those banked clouds of stars the emissaries are coming. If you will pardon so commonplace a simile, we have set off the fire-alarm and have nothing to do but to wait. 

I do not think we will have to wait for long.

- Arthur C. Clarke "The Sentinel", 1951

A Fenris Games resin model.  It makes an impressive 15mm piece, or a merely disturbing 28mm one ;)

Addendum: a better idea of the scale here...