Polk S10 Speaker Question

I'm picking up some Polk S10 speakers and they may need new tweeters. Does anyone by chance know the tweeter model number off the top of their head? Polk still supports most if not all of their vintage speaker models, correct?

I realize that these aren't the "all things known as Polk" series, but I had a pair of S6's a couple of years ago I thought sounded very well for what they were. These are essentially freebies and look to be in decent shape. The owner stated that something didn't sound right, like something was missing and I asked him if he felt it was the bass sound or treble sound and he thought it was possibly a dead tweeter.

I see plenty of tweeters online elsewhere that resemble the ones in the picture but there were various model numbers.

Thanks for your assistance or any information.

BTW, does Polk still discount to forum members?