Quite a few hyacinth vases come with this kind of tin decoration, I even have one with the name of the maker imprinted in the tin: Friedrich van Houten & Sonn (Bonn, Germany).
When you google the company this is what you will find:
"F. van Houten & Sonn (Bonn, Germany) was a longstanding mount producer for various Bohemian pottery and glassworks, but their patinated tin mounts are most often found in association with Loetz and Kralik glass".
There's more on the net about this firm and the glass looks Bohemian to me as well.
Good hunting
Patricia