Guglielmo Marconi [full inscription unknown]

Jez Nicholson on Flickr

Colour: white

Wikimedia:

Flickr:

See also...
Spudgun67 on Wikimedia Commons
Peter Reed on Flickr
rw_norris2000 on Flickr
cazphoto.co.uk on Flickr
Paul Mison on Flickr
Man vyi on Wikimedia Commons PD
Stuart Axe on Flickr
Kay Atherton on Geograph
Elliott Brown on Flickr
Nick Harrison on Flickr
Simply Jan on Flickr
Simply Jan on Flickr
Eugene O'Loughlin on Flickr PD 1.0
Nick Harrison on Flickr