Rare Vintage Brutalist Geometric Signed LINDA LINTON Fish ? 1 7/8" Silver Brooch

A recent Estate find in preowned used vintage condition. Some minor rubbing from use as to be expected with a preowned item-- but minimal in my opinion and has been well cared for over the years. Acid tested as sterling silver. Selling unpolished. Designer signed on backside. Approximately 1 7/8". Selling in as is/as found condition, so please review all photos. Item photos are taken with professional lighting to best show it's condition and coloring. Feel free to ask any questions you may have prior to purchase. All sales final, no returns. Note: I’m a vintage and antique product reseller with experience, but am not a certified appraiser or jeweler.