Has anyone ever had a siliqua or something similar that broke? It has a tiny flan crack, but it is not where the coin actually broke. One of mine seemingly cracked clean in half, but I didn't drop it or squish it. I just keep it in a binder and have not removed it from its slot or handled it. Today, I opened the binder and turned to its page to see that it was broken. I should also add that there are far more delicate coins in the same binder, so I'm assuming it is not a problem related to its storage. Just wondering if this happened to anyone else or if there's a possible explanation.