Seeking your views on maker and age, please.
The lack of ribbon or square mounting holes suggests they may not be Ropers.
They would fit the wider trigger-guard New Service introduced in 1909 but they are a perfect fit on my 1902 New Service Target. They did not come to me on that gun.
Little imperfections I can see under a strong light suggest to me they are hand checkered and not machined but I'm no expert.