ID Help needed on Giant Blue Hosta

[NancyL]

The Master Gardeners were donated some giant blue hostas for the digging. I am not at all aware of name/variety of historic Hostas. As a note for scale that window ledge was about 45" above the ground level and those are small Rhododendrons next to the hosta. They were about 40" tall - grown in a shady and very dry spot. Thanks for any help, it is always easier to sell a plant that has a name.