It is your lucky day. I found out that tweeter was made by Teteron, and there are
two available on eBay right now. You had better get them fast.
Just one word of caution. Don't play them loud. That tweeter was designed to be crossed at 3.5KHz and those speakers cross to the tweeter at 2KHz. As is so often the case, the individuals designing speakers, actually don't have the first clue how to do it.