Is Prudence China made exclusively for Ekco Home Products Microwave safe?

I have the zPrudence China-Baronesse 328, which has a silver trim. No it is not microwaveable, if it has any kind of metal (that I know for sure).

Yes, Prudence China is made exclusively for Ekco Home Products Company.

They however do not appear to be on the internet. Replacements Ltd does have some Prudence China. They are currently out of stock on the Milancia 327 which is what I have and our butter dish got broken in the move. So if you know anyone who has a butter dish in excellent condition for the Prudence Milancia 327 line I would be interested in purchasing.