Vintage Blue Opalescent Glass Hobnail Trumpet Vase

Vintage Fenton? Blue Opalescent Glass Hobnail Trumpet Vase ~ Approximately 5 3/4" tall x base is 3" ~ Good vintage condition from an estate ~ there is a flaw on the base, has an interior bubble with line (possible crack)? There is no roughness on either side of the glass, so possible flaw during production. Item is stored in a smoke and pet free home Thank you for looking, please check out the other items in my store!