Quote from flightwatch
and a pristine white -500 with no registration visible
The white one is almost certainly N753DA c/n 1189 (PH-RST to be)
http://www.eucomairlines.de/prodlist/n753da_1.jpg
the old Skygate machine
Is probably JY-SGI c/n 1234
http://www.planepictures.net/netshow.php?id=276661
Any serious offers on the others?
Many many thanks to flightwatch for finding time to include us in his busy schedule, much appreciated sir.
Be lucky
David