TR pin on EK1

[Ypern]

Hello folks,
Is this a TR period pin mount on my Imperial EK1? Does it give a clue to the maker? Thanks for any help and advice. I have seen on the forum all sorts of mounts on WW1 Ek1's but not many like this, which makes me think it might be a TR piece.
I look forward to hearing your thoughts on the matter. I have posted similar photo's on in the Imperial section of the forum as well, but so far no one has given an opinion.
Here's a link - http://s36.photobucket.com/user/Ypre...tml?sort=3&o=1

[Eklipse]

IMO too wide in the neck to be a known TR pin, sorry.

[Ypern]

Hi,
Thanks for your thoughts. I wonder if it is a Imperial era made piece, then?
Very many thanks.