Wowzer! Having it be a special heirloom plant makes it all the more amazing.
Welcome to NGA! You'll find a lot of great forums here... be sure to check out the african violet & gesnariad forum (Episcias are sort of AV "cousins").
https://garden.org/forums/view...
With that purple coloration in the leaves and knowing it's an older cultivar, could be that somebody can ID your plant... I know they'd like to see it!
