Queen Victoria - "Printed In England" Black And Blue Portraits - Unknown To Me

Good Evening Everyone,

I am still in the pursuit of identifying my unknown stamps. Please have a look at these two portraits of Queen Victoria - both of which have "Printed in England" on the reverse. One stamp is in black and the other in blue ink. I'm uncertain as the identification of these - would they be considered proofs? If someone could identify what these are at all I would be very grateful.

Thank you for looking

01 Blue

02 Black

these are prints of the "chalon" portrait of queen Victoria.It was eventually used for the Chalon head stamps of new zealand and (((These stamps, printed in New York City for the Canadian colonies, and by Perkins, Bacon and Company in London, were issued in many British colonies from the 1850s until 1912 in Queensland. In chronological order, they were released in the Province of Canada in 1851, Nova Scotia in 1853, Tasmania and New Zealand in 1855, The Bahamas and Natal in 1859, Grenada, New Brunswick and Queensland in 1860, and in 1870 in Prince Edward Island.)))
https://en.wikipedia.org/wiki/Chalon_head

Partiel proofs 1940 Stamp Centenary Exhibition sheets May 6th to 14th 1940 by Waterlow ?
(They exist in blue & black)
https://goscf.com/t/28261

Thank you for going above and beyond! A very complete answer, much appreciated!