There were eight of the "original" Brass Arc AAAs auctioned by PG on Ebay/Yahoo for the benefit of the CPF. For all intents and purposes they are identical to the regular production triple-As, with the same fine knurling. Unfortunately they had no laser engraving or other markings.
The ones produced by Peak under the "prototype" name, as visible in the auction photo further up the page, might look at first glance to be genuine Arc-AAAs (right down to the simple round head) but notice the knurling. It is different, having the same wider spacing as that of the later double-A, which was produced long after the original brass Arcs.
A genuine Brass Arc-AAA is worth a lot more than the Peak clones if only because they were auctioned for such high prices that their owners would be reluctant to part with them for anything much lower, but it can be hard to tell them apart given the lack of engraving. If you`re not sure, compare with a regular Arc triple-A and double-A, and if the knurling is the same as the triple-A, it`s probably genuine.
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