Hello Peter,
That c/n would be 337-01671 (33701671) a Cessna 337G registered in 1976 to:
Freestate Aviation, Gaithersburg MD.
Last registration: N725AS and cancelled as destroyed (probably parted out/scrapped) OCT 2001
http://www.airport-data.com/aircraft/N725AS.html
Don't know why it was sporting a NOAA sticker at RDG.
Cheers,
John