Cross shaped
Prior to joining the United Stars of the Galaxies, the Golden society was entirely based on trade.

When a Golden was found guilty of performing a fraudulent trade against another Golden, or through their actions closing a market (or potential market) to the rest of their society[1], they would be forbidden from selling or purchasing anything at a Golden Bazaar.

To clearly indicate this, a crude cross shaped patch of skin was removed from their head. The location was then cauterized using an hot iron, with the result being a nasty scar.

  1. Most of the laws in the Golden society are based on trade or potential for trade. There was only one thing that they were forbidden to trade - Sentient Beings. When a Golden was found knowingly trading sentient beings, an assassination team would be sent after them (prior to the Golden joining the Union.
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