I've seen such stacks being sold on Antica's trade forum a few years ago. I don't think these threads can be found anymore.I however recall one, not-so-old thread where someone asked if his overstacked pile of gps can be moved from dp to bp. He was adviced not to do it, as it would destroy the effect.I'll try to find some of those threads and post them here.
archived thread where someone sells 119 gp in one stack: http://tibiacommunity.com/overstacked-goldpile-for-sale
video showing 119 gp in one stack, by Bubba: https://www.youtube.com/watch?v=3z1myLf-9KQ
Those amounts of Gold Coins above 100 in one pile (Overstacked Gold) were lootable in the first weeks of Dragon Lords' existence.source: https://tibia.fandom.com/wiki/Gold_Coin
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