EXTRA LARGE Vintage Opaque Cobalt Blue Glass‎ Vase With 3 Handles Heavy 10”

This is so unusual, and like nothing I’ve ever seen. It almost feels like it has a coating of some sort. I’ll be honest, I’m stumped on the origin and make as it’s not signed. But, I had to take it because it’s beautiful, and so unique. The person I got it from said it was their elderly mother’s and she had owned it for many decades. I noticed a small crack in the inside that does not show on outside. More a stress crack than one from dropping or bumping. No other chips or damage. I do believe it’s hand made, definitely not from a mold. Please no lowball offers. Thanks for looking!