This nice pic tells what I am thinking of:

This EQ, only one made? Anyone know why it was made or anything?
I wonder if there are more items out there that is "hybrided" from that time?
I have seen the "Franked" amps etc, but this EQ is more than "just" a different paintjob...
Is it maybe a double-406a or something maybe?
The only specials I can remember just in this very moment (my head does not function 100% after my 16 hour nightshift today

So... If you know anything, please write in here..