So, I had over 100 gold coins and to save some space I turned them into a platinum coin. Then I found the goblin tinkerer and to let him move to his new apartment I went to kill the EOW a few times. This I did and then I went to buy stuff off him. I had 12 gold and I wanted to buy the rocket boots, the ruler, the workshop and the toolbelt. So, I went to the piggy bank and got out my preciousss platinum coin. I bought the items I wanted and sold the demonite ore that I had to make my money back up (4 stacks of demonite). On completing said transation I found I had just 27 gold left! The cost of the items was only 26 gold. I had 112 gold to start with (100 gold in the form a plat coin) AND I sold 4 stacks of demonite. So what happened to my lovely plat coin? It wasn't on the floor. I've exited the game and gone back in. But nada. No coin anywhere in my inventory (it was in the coins section). For a while I had the option to make 100 gold coins - BUT there was no plat coin in my inventory at all, I checked very carefully and after a few minutes that option went away. Anyone else experienced vanishing coins?.