what iceland viti ?
https://www.flickr.com/photos/kiddikr/9667311010/in/album-72157635361949705/ (https://www.flickr.com/photos/kiddikr/9667311010/in/album-72157635361949705/)
why so looks like a Norwegian lighthouse ?
Iceland import Norwegian Lighthouse ?
Viti is lighthouse in Icelandic. And they are quite simular to Norwegian lights except the colour. I don't think they purchased maybe just used same drawings.