Vintage Viking Norse Ship Pin

Tiny vintage pin with a detailed ship on waves with a blue background. I think the background is guilloche with blue enamel. Simple pin that might be a touch bent out of shape with a C-clasp. 21 millimetres wide, 5 millimetres tall and weighing under 2 grams. Marked 92'5 for sterling on the back. Also has a maker's mark that looks to me like an old mark used by David Andersen (later David-Andersen), a Norwegian maker. Based on the marks this likely dates from between 1920 and 1930.