Parts and Instructions for "Visible loader"

My elder brother recently passed away and I inherited a
Stevens Visible Loader that is incomplete. I have a few
questions that might help me decide what to do with it.

First, the serial number is "F 5XX" the XX are two number.
Can anyone give me an idea of the date when this might
have been built?

Second, the front half of the rifle is there: barrel, ammo tube,
sights, bolt, firing pin, trigger, pump wood. The missing
parts are the back stock, the hammer, hammer spring
and what ever else goes above the trigger. It appears
that a lifter is missing too because when the actions is
worked a shell put in place but is not lifted into alignment with the bore.
So this leads to a number of questions.
A. is there something that tells how to take the action
apart and reassemble it? Words and a schematic
that shows the parts and where they go would be good.
B. Is it possible to find/buy the missing parts after I
find out what is missing?
C. Is it worthwhile to try to make this a functional
firearm or is it only extra parts.

Perhaps some one have a "parts" rifle that would
complete mine or perhaps my rifle would complete
their rifle. If you have a suggestion, please let me
know.

Would a picture help anyone?

Thanks,

Thomas