Someone with patience or a good professional glass person might be able to clean the bottle & stopper. Both bottles have been ground and polished on the bottom to sit flat. The second bottle which is very clean inside and is marked Blenko on the bottom, is missing its stopper. The "streaky" stopper will fit in the clean bottle, but the opening on the bottle is slightly too big so the stopper sits a bit too low. Since another stopper might be next to impossible to find, the clean bottle could be displayed as is or it might be a great candidate for a very unique lamp conversion.
Please examine the pics and I have many more available pictures upon request. These beautiful pieces of art glass would make a great addition to almost any Blenko collection. Stick of butter is for size comparisons only and is not included. Blenko Glass 6111 Decanters (2) in Amethyst" is in sale since Monday, March 18, 2019.
This item is in the category "Pottery & Glass\Glass\Art Glass\North American\Blenko". The seller is "stickabutter" and is located in Dallas, Texas. This item can be shipped to United States.