Thanks for the photo, Jacques. I'll save that one, if it's OK with you!
I was begining to believe there were no examples of the original muffler left in captivity!
Is there good security at the Army Museum?

I have a fresh tin of black boot polish and a balaclava my mother knitted for me years ago.
I could re-live my pevious occupation as a 'cat burglar'. By the way......wanna buy a cat?
Actually, scratch that thought, the balaclava is pure wool and I couldn't stand wearing it, even to nick a genuine CMP muffler.