This is a copy of Treasure Island by Robert Louis Stevenson that was published by Grosset & Dunlop, undated, though printed about 1910. There is a gif inscription from 1924, inscriptions, unless from someone historically famous and relevent, do not impact value. This book sells for a bit higher when accompanied with the original dustjacket. The estimate is based on actual recent past recorded auction sales of comparables. Retail 'asking prices' can be higher and vary.