Sorry, I just read your comment and since I can't seem to post a comment myself, I'm answering you here.
I found this sculpture in Google images-Henry Moore rockingchair sculptures. It was sold at Christies. Can't link either, so here is the info:
"Mother and Child on Ladderback Chair"
bronze with green and brown patina
hgt: 7 3/4" width: 7 3/8" depth 2 1/4
Casr circa 1952-1954