Thank you for the interesting reply, Muffett!

Yes, Does appear to have come Full circle. I had not found any info on Peddie, and very little on the sight. As you say, I now see similarities to the Sutherland.
Thanks for the idea on the value as well. Very kind of you.

Question if I may;
How in hades do you use the peep aperture on this sight?? As in, how do you even See through that tiny pin-hole when it's half way down the barrel?
Do you know if it was used with a different type of fore-sight?
Of course, if I clag it on the rifle some of this may be self explanatory..

Thanks again Muffett and happy New Year!

Richard.