Large Oversized Vintage Stained Slag Glass Mission Oak Arts & Crafts Table Lamp

It stands approximately 25″ Tall and the shade is approximately 14 and 1/8″ square. It has a bit of an iridescent finish to the brass which reminds me of Arroyo Craftsman but I’m not sure who made it. It works fine and is in Good Condition with some light wear here and there.