I was sent an image of the poster from the Exhibition in Belgrade, Serbia. It is an interesting poster..... I am not sure of the relevance of the angels, but it is probably something to do with Christmas and the New Year.
It is nice to get copies of the posters as well as the catalogues from the exhibitions you take part in. I must start a scrap book one of these days. It is almost new-years eve so I will wish you all a prosperous new year.