https://www.google.com/webhp?sourceid=chrome-instant&ion=1&espv=2&ie=UTF-8#q=Chagall+reproductions+and+prints+for+sale

Thats hard to say without my being able to see it in person !! It depends on the size if it is a hand done or repro, any imperfections it may have ect !! Check those in the link !! Sometimes a good repro is about $200. depending on the size !! Small ones about $25. !!

I removed painting. No markings. Can you tell me what this might be worth? thank you

If I were you,, I would remove it from the frame and see if there is publisher info either on back or in the border !! Poster board is not something he would have used as far as I know !! Just remove the clips from the back and lift the backer board out !! Sometimes the artwork comes out with it,,lift it gently by the edge !! Wear gloves so the oil from your hands does not soil the paper. !! Put it back the same way it came out !! Its really simple !! I would clean the glass well and let dry before putting it back in the frame !! Just handle it gently !! Just in case !!

And is this done on paper ?? Yes . It appears to be on a poster board (please see photo).

Is there a signature ?? I cannot find one.

Where did you get this work ?? Estate Sale (Atlanta , Ga
Thank you for any information possible.

And is this done on paper ?? Is there a signature ?? Where did you get this work ??
He did not sign all his artwork !! Some are signed in the plate in Hebrew usually at the bottom of the piece !! Some are signed in pencil in the border and some have both signatures !!