Probably just an extra trigger spring.
You don't have another cigar box w/a disassembled 1894 Remington in it do you?,,Maybe that one needs a trigger spring.
The 1894 trigger spring units are kind of known for their less than perfect symmetry when it comes to the width of the two attached arms,,one each to power each of the triggers.
Some are way too wide,,some are split with one narrow and one wide leaf. Some are just fine.
An A Grade I have here now has one of the springs with the extra wide leaf on the left trigger side. Works just fine, just looks a bit odd (I guess).
Nobody sees it anyway except us.
Safety Plunger Spring?,,don't know about that one on a 1894. They use the same type safety spring as a Fox or PArker,,a thin flat spring w/a crimp in it so the safety snaps over it by way of the cross pin. Secured to the underside of the upper tang w/a small screw.
I've got a DE grade here but it's mostly still together. I don't recall the safety being any different inside it though when I had it apart.