All I know is that these were popular during the Victorian era for growing Hyacinth flowers indoors from bulbs. And they come in an array of very nice colors.

Good info on first link below.

• Collecting Hyacinth Vases

• Hyacinths the Old Fashioned Way

• Hyacinthus bulb guide

• Lots of nice Hyacinth Vases are bought/sold on eBay.

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