Lot of 9 Very Large 1 3/4" Vintage or even Antique Abalone Mother of Pearl Shank Buttons. 8 are the same and one is a Carved on the front with a geometric pattern. Each button is approximately 1mm or so thick. I do not know age of these - they are definitely vintage and have been in button box for decades. They might be antiques but I do not know for sure. Very beautiful iridescent buttons that alter in color in light with shimmering rainbow of pastel shell colors. 

These actually look much better in person than in photos. See all pics for details.

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