Picked this up over the weekend:
A Peterson Strobe Tuner 420. Old, but in great working shape and recently serviced by the fine folks at Peterson.
I've owned the iStrobe app and have used the handheld digital Strobe tuners before, but mechanical nature of this makes it a different beast altogether. Does what a tuner's supposed to do (read: works), it's kinda fun to use and looks sexy on my work bench.