Those are tiles created by Christie Ward(at vikinganswerlady.com, her page went down, but luckily, I was able to recover the tiles from my computer). You can see the tiles in action, in the following screenshot and they look quite good:
Christie created 2 Viking Mahjong Tilesets, both of them based on the same background. Useless to say, both of them are looking good:
And here is the second tileset:
Christie created also a few other tiles for mahjongg kyodai: one with Art of the Scythians, 4 Tarot Themed Tilesets, 2 Sets with Flower and Gardening Mahjong Tiles and a few others.
Kyodai Mahjongg Fan Page 