I called this antiques shop, Green Country Estates, a Ruby Lane vendor in Tulsa to ask about purchasing some Waterford crystal glasses to replace some from a vintage 1970s set. This merchant, Ms. Kelley, was so well informed about the provenance of her merchandise that she was able to help me ascertain that the ones in her shop had been blown at approximately the same time as mine, which is important in hand blown glass, as each artisan has a slightly different technique. The glasses arrived promptly and no breakage They were a good match for mine. I would purchase from her any time