Milsurp After Hours

Bought these as I was after after some sight discs
What I would like to know is what is the sight on the top right
I feel I have seen one discussed here some time ago as a replacement for the service Martini or Long Tom but a search does not throw anything up
I await your thoughts on the matter

I'm a little confused.
Top right doesn't look like a sight to me, looks like something out of the internals of a Martini.
Top left however looks like a variable aperture sight, early 20th century, perhaps BSA ?

Next row over

You mean to the right of the rear volley sight arm ?

That isn't a martini part,

The item on the right in the next row down appears from the angle displayed to be a windage adjustable sight blade for a ladder sight.