Thank you for submitting your item for appraisal. This appears to be a Vanguard Studios Workshop painting, produced in the production line workshop founded by Lee Reynolds Burr in the 1960s. A large number of talented art students worked for Burr and used his signature "Lee Reynolds". The paintings were inexpensive wall decoration then and this has not very much changed. The painting / collage in your Possession shows a print of a Sonata and a painted violin plus pochoir painted ornaments. The estimate is based on similar offered or sold at auction. There is no measurement for the sentimental value you might attach to it.