From the pictures a few links through, it was silkscreened on along with some other information that was going to be there anyway. I imagine if it was before that silkscreen was made, it didn't cost anything extra.
Further on this point: It's common for PCBs (Printed Circuit Boards) to have Easter eggs in either the copper or silkscreen layers. They're also often in the photolithography masks used for making silicon chips: http://micro.magnet.fsu.edu/creatures/index.html
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This is really sweet. I wonder what the cost was to do this for every unit, and at what point in the production lifecycle her death occured?
From the pictures a few links through, it was silkscreened on along with some other information that was going to be there anyway. I imagine if it was before that silkscreen was made, it didn't cost anything extra.
Further on this point: It's common for PCBs (Printed Circuit Boards) to have Easter eggs in either the copper or silkscreen layers. They're also often in the photolithography masks used for making silicon chips: http://micro.magnet.fsu.edu/creatures/index.html