Thanks Bob. I had wondered what that triangle of metal was, in the middle of the sear spring. Support for the safety - spot-on!
Thanks for the note on your 24 bore's condition, moodyholler.
VERY interesting rear sight leaves, with the apertures instead of notches. I've never seen that before.
Here's the bore on Taylor's 16 bore Joseph Lang, another quality English rifle. Gotta love 'em.