What's it worth? Appraisal of Handel lamp w reverse painted shade

Julie asks:

Please see attached pictures of Handel light and provide appraisal.  If you need additional information please feel free to contact me.
 The light has the following numbers on it 7026 and 10,001.
 
Julie

AW says: Julie, that’s a magnificent lamp. Handel lamps from the Arts & Crafts period in America, epitomize the era. Your lamp is circ 1915-1930. Handel Lamp co. ceased operation in 1936.

Your lamp shade is often referred to as Exotic Birds and Flowers. This was reverse painted on glass.

Retail Value = $12,000-$13,500

Wholesale value = $8,000-$10,000

Quick sale value = A lamp of this stature should not have to suffer quick sale value.

Keywords = Lamp, antique lighting, reverse painted shade, Handel, 7026, 100001, arts and crafts, Exotic Birds and flowers.