How can you tell if an old Remington has "Damascus" barrels

[Researcher]

The Remington Arms Co. Hammer Double Barrel Shotgun, aka Model 1889, with serial number 218699 would be of 1901 vintage. The Model 1889 was made in seven grades. The lowest grade, Grade 1, had decarbonized steel barrels. A Grade 2 had twist steel barrels and a Grade 3 had Damascus barrels. Grades 1, 2, and 3 had no engraving and half-pistol grip stocks. Higher grades, 4, 5, 6, and 7 had increasing amounts of engraving, finer wood and checkering, and finer Damascus barrels. Here are the Model 1889 pages from the 1901 Remington Arms Co. catalogue --