Mr Light wrote:
I was operating under the assumption that David was the first of his kind, the prototype, and no others had been made yet.
In the viral advert Happy Birthday David
, we see two Davids playing a game. If we take the advert at face value, then he's not one of a kind. However, I suppose it is possible and even
likely that the first or one of the first Davids made would be claimed by Weyland if he took a great deal of interest in the android's development.