^I was at work then and didn't want to try accessing d20srd.org. XD
But yes, it is conceivably possible that... hmm...
A Gold Transformer to Silver Output could simply chuck Light cantrips to generate net energy. 1 ebb per Light spell, generates 2 ebbs per round for 100 rounds. >.>
Given a field of base metals (a ton of copper), it could slowly transmute the copper into more Gold and Silver and then set up a copy of itself.
Replication time: A couple of hours.
Practical application is left as an exercise to the user.