Another out of date one turned up here a short while ago.
Pan Am Boeing 707-321 mode S A9A4D2 Registration N720PA.
Obviously we knew this was not right so Airframes tell us it is a Piper PA-28-181
Another great aircraft, one of the original, smoky, pre-turbofan 707s with P&W JT4s. Incidentally this one spent 10 years on the British register as G-AYVG with Donaldson and British Midland after Pan Am disposed of it in the early 1970s.
The photo RadarBox brings up appears to be taken at Hong Hong in the late 1960s - this has to be a strong contender for the most out-of-date RadarBox aircraft details/photo, unless anyone knows differently :-)