Lets start the count
I can account for at least 5 chains & 4 Heads now in NZ(2 EX BBC TVC Model A,s) .Their,s more heads floating around the world !But were are the complete cameras (chains). The others are model J/k,s. that now makes
916 were made
UK=9 Chains ? Heads
NZ=5 CHAINS 4 HEADS Known to be about
AUS= Nearly 1 Chain 2 Heads
Brazil =1
Gibraltar=1 Looks like 1 more Head according to this Photo
http://www.facebook.com/photo.php?fb...7768249&type=3