Dirk:
Now that's an interesting find! I wonder if they made the fabric themselves or imported it via Harrachov. It explains why the fabric doesn't look like it's been embedded in the glass very neatly, as they can't have had the experience using it that Harrachov had. One to keep in mind, and, once again, just when you think you have the key to attributing a certain process or style, something comes along to provide the exception.
David