2057

Unusual Safety Lamp w/ Biotite Window

Currency:USD Category:Collectibles / Mining Start Price:100.00 USD Estimated At:200.00 - 400.00 USD
Unusual Safety Lamp w/ Biotite Window
SOLD
600.00USDto 8*************e+ buyer's premium (144.00)
This item SOLD at 2017 Jul 09 @ 09:21UTC-7 : PDT/MST
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Unusual style with large biotite window. No markings other than the patent number. This lamp appears to be made by the Joris Company of Liege, Belgium. Circa 1900. Measured markings along the biotite window indicate the amount of methane in the air by measuring the height of the blue. Rare. 12.25 inches tall, 3.75 inch diameter base. State: City: HWAC#: 47154 Date: