Beam Milkglass w/ radical striations

[trussin]

OK Im looking for help on this one. Im cleaning out a ladies basement and I spot a milglass decanter I can tell is Beam. 1961 tax stamp with stopper. I dont own any beam bottles so I grab it. After cleaning the stopper has green stirations and the bottle has a swath threee inches across cobalt to amethyist the entire length of the bottle. Its nice enough to keep! So i search ebay and several other sites and I cant find one with color anywhere. Any Beam collectors out there?