Excellent thread,again, and great photos there.
The .455 is a beast and costs an arm even when deactivated in UK. This is a pic I took at an auction in UK.
.455 and .38, both Mark-VI

http://indiansforguns.com/viewtopic.php?f=12&t=2685
Baljit,
You got a fantastic piece there!
Best-
Vikram