Buff Sussex? anyone

I have been seeing this beautiful chicken in various chicken magazines and have been searching to find out what breed this chicken breed was......and i found it!
I would like to find out who raises these birds..
Would like to secure a few hens/pullets to see if i like them.
Thanks Carol

Have you seen these? I wonder if the still have them?

https://wcps.canadian-forum.com/t7632-buff-sussex-hatching-eggs?highlight=Buff+Sussex

https://wcps.canadian-forum.com/t5410-light-sussex-buff-sussex-cockerals-and-pullets-sherwood-park-large-birds?highlight=Buff+Sussex

https://wcps.canadian-forum.com/t3500-breeding-light-sussex-coronations-also-buff-sussex?highlight=Buff+Sussex

https://wcps.canadian-forum.com/t3467-buff-sussex-pair-vancouver-island?highlight=Buff+Sussex

https://wcps.canadian-forum.com/t7826-decisions-decisions-do-i-sell-my-rooster-or-not#66182

Buff/orange pullet from speckled sussex roo x light sussex hen.