Vintage Czech Republic Glass Butterfly Shank Buttons - Four Colors

These buttons are new very old stock obtained from a disused factory.   They were imported in bulk.   The glass is vibrant.  The metal shanks are securely glued to the back.  They measure 1" x 3/4" across the widest part.   

They are re-packaged as I originally received them:  individually wrapped in tissue paper and bagged to keep from cracking/scratching during shipping on to you.   The quantity I have are the only pieces I have seen since I purchased them some ten years ago.