Tim,
I have John Kelly turnover sights on an Anschutz 1813 Supermatch, that also has a Karl Kenyon trigger. I bought it from an international competitor in Cheshire probably 8 -10 years ago.
Do you know if there is any interest in the John Kelly sights as there is little history and I am told John Kelly passed away some years ago.
The last time I saw some John Kelly for sale they were on and went to a dealer for £100.
I saw your comment on one of the USA shooting forum pages so I thought you may have some information.
Hoping that you can help if possible.
Best regards
HM