There most certainly are 100k zloty coins as I have one in my collection. The one I have is early 90s and has the Polish eagle with 100k on one side and a Warsaw uprising soldier on the other. Although I believe they were commemorative and not meant for exchange.
I know what it is. That`s why I am telling you: I can give you 50 zlotys. You send me your 50 and I will send you the same 50 zlotys, but newer - let me see into my pocket - from 2017.
I see. Hello, Mr Philipino, nice to meet you. I am not sure if you understood what I said about our exchange. If I wanted to buy your 50 zloty note, I would give you the same note but a newer one. The money from 1990s is still used today.
Unfortunately, I already withdrew from Facebook. It is an evil platform with a lot of empty vain people. I didn`t want to be like them.
Ok, I understand, but you won`t have any profit from our exchange, coz you will get the same amount from me. You will even run into additional expense coz we need to cover the cost of shipment. It was a long time ago that the forum enabled such exchanges and paid for them - today no longer.