Yes, the flashes are the same as the ones from the SE, so that is definitely a sign confirming the SE.
Here’s one more frame showing it:
http://imgur.com/Pc2yPZ3
Here’s another one from ESB:
http://imgur.com/VM3AkvF
If you know someone at RMW / Reliance, they would have had access to the clips,
if they were in the restoration department.
R1