Hi Stu,
That is a beautiful cased set; one of the best I have ever seen but in my view, the repro can takes away from it rather than enhances it. I'd have sought a contemporary valvespout can such as a Parker Hale or maybe some 1930s Rangoon oil.
Still, that's only my opinion, and if you disagree, don't let me take away from your pride of ownership of such a lovely cased Senior.
John
Currently looking for Baikal Makarov pistols with the following prefixes to the serial number: 98, T01, T09, T21, T22
Prefer boxed or cased but will consider loose examples too.