Vintage B.C.A. Denmark brass oil lamps

These vintage brass oil lamps by the company B.C.A. Of Denmark. The items are made of polished brass, which develops a rich patina over time. Their simple, cylindrical shape is characteristic of mid-century modern design principles, popular in the 1960s and 70s. They are designed to hold lamp oil and a wick, serving as functional lighting accents (or converted candle holders). Great collectible. Great patina. Have not been tested to see if they work. More for a display or conversation piece. Could be used as described if you know anything about them. GUC thanks for looking!