Vintage MCM Style Chunk lucite lamp shade

Description

First of all I'll say I'm guessing at the age, maker and style of this shade.  It is extremely heavy and has repairs on the top of the frame it has been soldered to reinforce the weight the  shade (about 25lb).  It measures 15" in height about 12" wide the panels are around 10". In the photos Iv'e placed a light to illuminate the shade, it is really colorful.
It is in overall great shaped, photos show the top frame portion of repairs.  No clue as to age maybe 70's-80's?  I will try to answer any question you may have, payment within 3 days, shipping will be about .00, I'll use the most economical method possible.
.