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It is well known that the pointer state |{\Phi}> resulting from the vonNeumann measurement of a projection operator A performed upon an ensemble ofquantum systems in the preselected state |{\psi}> depends upon A|{\psi}>. Hereit is shown that the pointer state |{\Psi}> obtained from such a measurementperformed upon an ensemble that is also postselected depends upon the weakvalue of A - regardless of the measurement interaction strength. It is alsofound that, while the spatial distribution of |{\Psi}> exhibits interference,the idempotency of A prohibits interference in that of |{\Phi}>. This isexplained in terms of welcher Weg information.

A Note Concerning von Neumann Projector Measurement Pointer States, Weak Values, and Interference