Private S.211 jettrainer in San Diego, ID needed.

[CrazyCavia]

Shot this S.211 at Gillespie Field last sunday but am unable to find anything about it. No registration is visible on either side and the only thing visible is the Fighting 50's decal on the intake.
Anybody have an ID for this bird?

[Mike]

It was parked on the ramp at Hollister last week, and from my photos I can see that it wears the regIstration N7R on the other side. The FAA database shows this as a pending registration change from N852TC.