railman is right on here..........Mutua
l Lamp Manufacturing is one of many who made art glass domes for gas, oil and electric. I believe yours is circa 1900-20's. I do not know if yours is Mutual but it is of that era. A nice shade in what appears to be very nice condition..........
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ng on condition, at live auction I could double that estimate of $200-$500 to $1000.
not to take away from railman as we all know that condition is everything.........
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