North Dakota, due to its low population, is a fairly hard state to obtain early license plates. North Dakota started issuing its first official plates in 1911.
The metal shortage caused by World War 2 forced many states to use alternative materials - North Dakota used windshield stickers for 1943. However, new registrants for 1943 received plates with the date stamped into them - these are very rare, indeed. My example below is a repaint.