Thank you for submitting your item for appraisal. This appears to be a late Louis Philippe style sofa of the 1870s, the frame showing a flowing outline, ending in volutes, the backrest accentuated with oval shape below a mascaron type carving. In apparently good original condition. The estimate is based on similar sofas offered or sold at auction. "Asking prices" in the trade can be higher and vary. There is no measurement for the sentimental value you might attach to it.