"Ushnisha Vijaya" also known as Namgyelma. This Tibetan Thanka Treasure card shows this goddess with eight arms and three faces.
"Vijaya (Namgyelma): The three faced, eight-armed goddess & longevity seated in a lotus posture on a lotus throne."
The dimensions of the postcard are 15.8 cm x 10.7 cm x 0,1 cm (single card without an envelope). This is a Fair Trade product from Nepal by Dakini.