Thank you for submitting your item for appraisal. This appears to be a mid 20th century pair or Murano glass birds, mouth blown polychrome glass, transparent and opaque. Most likely a rest-of-the-day item, using leftover glass at the end of a workday. Both are well done, most likely made by an experienced italian glassblower. The estimate is based on similar items 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 attacht to it.