Bastin Freres Shotgun
Very little is know about this rare beautifully made shotgun. Is has very nice dark brown damascus barrels and is very well put together.
This website shows a second, slightly different, example; but not as nice as this one!
http://www.littlegun.be/arme%20belge/artisans%20identifies%20b/a%20bastin%20freres%20gb.htm