This one is from 1900:

[url=[URL=http://s1201.photobucket.com/user/trw999/media/Fine%20British%20Guns/Weston%201900%20on_zpszacw4kdk.jpg.html][/url]][/url]

This one from 1880 to 1900:

[url=[URL=http://s1201.photobucket.com/user/trw999/media/Fine%20British%20Guns/Weston%201880-1900_zpsdkaw29ef.jpg.html][/url]][/url]

And this one from 1866 to 1880:

[url=[URL=http://s1201.photobucket.com/user/trw999/media/Fine%20British%20Guns/Weston%201866-1880_zpsgadak3zk.jpg.html][/url]][/url]

Tim