This is a set of four Design Gifts International Inc. cast resin underwater flower coasters and an underwater flower trivet of an unknown brand. I believe they are from the 1960s or 70s, but I'm not certain. I purchased them from a vintage shop and haven't used them, but as they are antique items, they have original scratches, stains, and chips (on the back of the trivet). They are botanical items with a wonderful atmosphere. For those who understand vintage items, thank you. #vintage #ヴィンテージ