Per 'L. C. Smith "The Legend Lives"', damascus barrels were a regular option up until 1919. Belgian damascus was hard to get after WW I, although the Nessonvaux firm of J. Delcour-Dupont made barrels in the Vesdre Valley again 1924-1930. What year production is your gun? The barrels are likely Two Iron Crolle "Good Damascus" with fairly large scrolls. Can you post a high resolution close-up pic? Are there any letters on the bottom of the barrels just forward of the flats? BD?