Where was the Sonus Gold Blue Stylus made, USA?

I just recently aquired a Sonus Gold Blue cartridge NOS. I wanted to know if the original stylus in this cartridge was actually made in the USA like the ADC cartridges? Anybody know. I currently have a "freindly" dispute with a freind about this, he says that they were made in Japan, I said that they were made in the USA. I figure Mr. Pritchard would have done so. Thanks, Gerald.