Handel Company patented the design in 1902 and other makers such as Sechrist imitated it.
Albert Sechrist Mfg. Co. (Denver, CO) or Handel Lamp Company (Meriden, CT, 1876-1941)
A. C. Revi, American Art Nouveau Glass, p. 341.
Width 5.5 Depth 5.5 Height 5 in.