John Lennon 'Anthology' double-sided promo poster from 1998 - one side is for the 4 disc Anthology set and the reverse side is for the Wonsaponatime CD.
 
The poster has some creasing on the edges, and some surface marking, but otherwise in decent condition (see photos for more details).
 
Size is approx. 15.75"x23.5" (inches).