Very helpful Flues tutorial is here, courtesy of Researcher
http://www.doublegunshop.com/forums/ubbthreads.php?ubb=showflat&Number=552032&page=2 Also courtesy of Researcher
Up into early 1915, the No. 1 1/2 had the frame with the roll-stamped dog with company name and a bit of zig-zag border engraving with Damascus barrels, while the Field Grade, No. 1 and the No. 1 Special just had the roll-stamped dog with company name. Field Grade had Smokeless Powder Steel and a half-pistol grip stock. The No. 1 had Twist steel barrels and the No. 1 Special had Cockerill Steel barrels. In mid-1915, Ithaca Gun Co. introduced the bold floral engraving on the No. 1 1/2 and added the option of Krupp Fluid Steel barrels.
In that the gun is >105 years old it is past due for a check and clean by a qualified double gun specialist, and if loose, repaired. The chambers are likely 2 3/4", which the smith can confirm. Let us know where you are and we might be able to recommend someone nearby.
I agree with Clapper that there is little collector/shooter interest in Flues
12g guns, but IMHO a No. 1 1/2 with Krupp barrels is somewhat special and would carry additional value.
BTW: Walt Snyder graciously donated his collection of original Ithaca records to the Buffalo Bill Center of the West, and a research letter might document the original purchaser.
https://centerofthewest.org/explore/firearms/firearms-records/ithaca/Walt's book
Ithaca Gun Company: From The Beginning is out of print, but still available on the 2nd hand market, or you might ask your local library to request a copy for you - it is well worth reading.
Most sporting goods/hardware store catalogs listed the 1 1/2 with damascus barrels in 1915 for $50; $60 with AE, which would be about $1800 today. I don't know if Krupp barrels added to the cost.
