I am a Gresley pacific (A4 and A3) fan, so I have a couple.
Here is the Sunset Silver Fox A4:
And video:
The ACE Mallard:
And video:
And a 1 gauge ASTER Mallard:
And video:
Many more pictures in my (free to download) e-book on this subject: http://sncf231e.nl/lner-pacifics-and-nyc-hudsons/
Regards
Fred