Hello!
The He 59 in this photo:
http://cgi.ebay.de/ws/eBayISAPI.dll?...m=270097501259
is probably PY+NF. Three Finnish official military photos of the He 59 PY+NF are in the Finnish archives. Those photos are captioned "A German plane forced down by AA at Lauttasaari island beach" Lauttasaari is almost downtown Helsinki. Time is Summer 1941.
EDIT In book "German aircraft in Finland" by Keskinen et al at page 120 there is photo of He 59 B-1 PY+NF WNr 1821 (it is one of the "SA-kuva" photos I mentioned). The place is Helsinki Lauttasaari.
Cheers,
Kari