This is a later 20th century, framed print replica of a needlepoint sampler from 1808 by Ann Martin entitled 'On Diligence'. The one and only original is in the collection of the Worcester Art Museum in Worcester Massachusetts. The prints are photogravure, so the threads appear real. There are some examples of copies being done from kits in actual needlepoint. Extreme close-ups of the surface would be helpful in determining if this is a needlepoint kit or a print. The estimate is based on actual recent past recorded auction sales of comparables. Retail 'asking prices' can be higher and vary.