Ian states that they ( 16p values and 50p values) "are distinctly different to the ones from ordinary counter sheets".
These new stamps, are the very first Machins which have been printed by Cartor of France and this fact seems to show in the actual colour shades of the printing.
Ian also posted images of the stamps that are in the 12 February Darwin PSB Machin pane - he goes on to say "the 5p is stunningly different !"
The other two Machins 10p values and 48p values in the Darwin booklet are of slightly lighter shade from counter sheet issues.
Ian has supplied these and informs us that they "are actual scans" and goes on to say " These are scans of the actual stamps: I don't think we've had a 5p - or indeed any Machin - quite this colour before! These Machins are printed by De La Rue, in litho (sheet stamps are in gravure)".
Ian has informed me that he has started his own blog dealing with GB New Issues, this has now been added to our links section. Catch up with all the latest on GB Special issues here at norphil.blogspot.com
If you wish to contact Ian direct here are his details.
Ian BillingsNorvic Philatelics APS#207617
P O Box 119, Dereham, NR20 3YN, United Kingdom
Online store: http://www.norphil.co.uk/catalog