What is an Upright piano by New England co 31799 worth?

It is difficult to provide an accurate valuation for an Upright piano by New England Co. 31799 without inspecting the instrument in person. Piano valuations can be influenced by various factors, including the piano's age, condition, brand reputation, and market demand. New England Co. pianos were manufactured during the early 20th century, so the age and condition of the particular instrument you are referencing would play a significant role in determining its value. If the piano is in good condition and regularly maintained, it could potentially hold some value. However, it is recommended that you consult with a qualified piano technician or appraiser to assess the instrument and provide a more accurate estimate of its worth.