I don't have reliable information about a specific artwork titled "Untitled - Seascape with Cloud" by Sven Lukin in my training data. While Sven Lukin was a notable abstract artist known for his work in various media including screenprinting, I cannot provide accurate details about this particular piece without risking inaccuracy. I'd recommend consulting museum collections, gallery records, or the artist's catalogue raisonné for factual information about this work.