Any idea on the number on this Kosta crystal vase by Ellis Bergh

The base on this vase is so scratched up I can only make out that it is by Kosta. Based on its design I think it is by Bergh, all the facets are cut and polished. Does anyone have any idea what the number would be on it? I have been unable to locate another one in person or on the web. It is right at 27 cm. tall. Many thanks in advance. I have completely repolished the interior, was totally filmed over. Since we paid only $15 for it 12 years ago it, hadn't been a priority.