Vintage sterling silver 925 Brutalist mother and child pin brooch rag doll

Vintage sterling silver 925 Whimsicle mother and child pin brooch rag doll. Please see all pictures for details. Item has been acid tested Positive for Sterling. I have shined it up a bit but not all the way to leave patina for buyer to decide if they would like to leave it. Very unique and Rare piece, possibly kachina?