I am trying to find a value for a large chandeler, solid brass 12 arm, 18 lights . It is stamped LAMP ART MOD DEP. Has anyone heard of this company?

This is a solid brass chandelier coming out of an estate in Cherry Hills Colorado. I have a business recycling used interiors usually cabinet boxes, appliances , doors, bathrooms etc. This house has valuable lighting and bath hardware. I am trying to value and sell 2 large chandeliers that I have been told are quite valuable but am having trouble getting more information on them w/out hiring an expensive appraiser. They are stamped LAMP ART MOD. DEP on the inside. They are very heavy. All I could find online was a company called Euro lamp art in Italy. Can amyone help?