HT4007: Aperture 3: Frequently Asked Questions (FAQ)Learn about Aperture 3: Frequently Asked Questions (FAQ)
Currently Being ModeratedDec 13, 2012 12:05 PM (in response to bdimarco)
Do you still have a mac with Aperture running? Then you can see the Aperture serial number in the About panel: Aperture's main application menu > > About Aperture.
Otherwise you really need to find the original boxes - the serial number is inside this boxes on the booklet.
If all fails, contact Apple with a proof of purchase, see: Pro Application Replacement Serial Numbers