Technics 5HH10 Horn Tweeter Technics with Capacitor

Technics 5HH10 Horn Tweeter, Max Output 50W

Purchased long ago at Koizumi Musen in Akihabara.
I built my own speakers and was satisfied, so I barely used them.
I did test them recently to confirm they work.
I can't comment on the sound quality, but they do produce sound.

There are some mysterious stains, possibly due to age. I have not attempted to clean them, so please assess them yourself.
They would normally be beautiful, machined from aluminum...

Included capacitor is AUDYN-CAP 1.0μF.

Thank you for looking.