Liberia $20 silver commeratives

Does anyone in this group collect $20 Liberian commeratives ?  I have 12 that I can't authenticate. I have been through the Numista list and check eBay daily. Any help will be appreciated. Thanks.

Hello 🤖

Without pictures, it will be very difficult for anyone to help you. Could you please post clear pictures of each side of your item?

Please note that this is an automatic message. Feel free to ignore if it is not relevant.

It's an interesting collecting area but I haven't run across any of the $20 types, I suspect they're later than the ones I've collected that are part of the USA Millennium Tribute series from ~ 2000. Check my Moneta Museum site link and there's also a link there to a downloadable guide I wrote. Are these $20 types silver or CN?

http://www.moneta-coins.com/showphoto.php?photo=188&title=liberia27morgan-27-dollarflags&cat=663