Was that with boiled egg? I tried that on five or six kooks that I had. I put the egg in the middle, placed the coins around it and chucked on some glad wrap. Probably should have done it in a more 'even' way like the instruction video showed, because I ended up with half a dozen coins that got 'half antiqued' on one face, haha. The egg fumes radiated from the centre of the plate but didn't quite get to the edge of the coins, haha. I'll have another crack at it with the monarch things but I'm too scared to lift the lid on the mashed egg that I have in the fridge. Might go buy another container.