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Crown Tri Metal II
Crown Tri-Metal III
Crown Tunnessen 1 Patent
Crown Tunnessen 2 Patent
Crown Tri-Metal IV
  Crown Tri-Metal IV Marking.JPG - CROWN TRI-METAL IV - Crown tri-metal face lamp, brass collar, copper font and bottom, lid stamped PAT. MAY 26, 1908 & APRIL 20, 09, lamp stands 2 3/4 in. to lid, base dia. 1 7/8 in., bottom marked “CROWN” TRADE MARK REG’D U. S. PAT. OFFICE centered on base (not circular pattern)  
Demmler Bros
Demmler Bros. II
Demmler Bros. II Marking
Demmler Bros. Front Side
Demmler Bros. Front Side Marking

Crown Tri-Metal IV Marking | CROWN TRI-METAL IV - Crown tri-metal face lamp, brass collar, copper font and bottom, lid stamped PAT. MAY 26, 1908 & APRIL 20, 09, lamp stands 2 3/4 in. to lid, base dia. 1 7/8 in., bottom marked “CROWN” TRADE MARK REG’D U. S. PAT. OFFICE centered on base (not circular pattern) Download Original Image
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