I won't guesstimate a value but can provide a small amount of information. The records record a total of 205 Ideal Grade 10-bore shotguns with the overwhelming majority shipping with 32" Damascus barrels. The rarest 10-bore Ideals have steel barrels (total unknown), auto-ejectors (36), and a Hunter One-trigger (1). Yours has Damascus barrels and is a manual extractor model with double triggers that would have been made between 1913 and 1919 given that it has the Curtis fore end fastener. With collectible guns, having most original finishes intact is critical for greatest value; and factory finishes on this gun are badly worn, so don't think it will be very desirable amongst collectors even though it is an uncommon Ideal grade as regards bore size (Ideal Grades are very common except for 10 and .410 bores).
