Antique Sandwich Glass Waffle and Thumbprint Oil factory Lamp

Sandwich Glass company waffle and thumbprint pattern oil lamp. Made factory in 2 pieces as you expect and joined with a wafer. Lamp was made 1840-1870. Lamp is 9 3/4" tall. There are 2 minor chips on the base. 1 is on the outside of the base and 1 on the inside of the base. I tried to show these in the photos. What you see is what I have. The burner and chimney are missing.