Rapstertee over on the UKG 501st forums posted something I think you'd like to take a look at:
link to topic:
Welcome To The UK Garrison • Login
The pic was apparently taken in 1981 in the island of Jersey, Channel Islands, UK.
So what do you think it is?
My guess is a pre-pro promotional Fett costume, similar to that seen in the 'Making of ESB' book.
What I want to know is how it got all the way to little old Jersey, a small island of 9miles by 5?!