This vintage Paper/Cardboard 1 Dozen Egg Carton from the Bloomer Bros. Company, is Circa 1930's. The Bloomer Brothers Paper Company was out of Newark, NY. The writing on the bottom of the cartons suggests you keep it and refill when you needed more eggs.
The colors and graphics on this vintage container are still very vivid and bright. The carton shows some normal vintage wear for a collectible that's over 80 years old. All the dividers are still inside and the carton is intact.