There are a few thing that the bike has going for it.
#1 it has the original fenders$$$$
They are usually missing and are impossible to find. This is a 24" bike not your typical 26" But almost all Silver Kings are 24" there are only a few models that where made in a 26" frame.
#2 it has the original aluminum truss rods. There again usually missing and are very hard to find.
Things that are missing are:
Seat, original aluminum stem and aluminum handle bars.
The seat can be found pretty easy. The stem can usually be found.
But the aluminum bars are very hard to find.
Looks like the front wheel is incorrect but 24" triple step wheels can be found as well.
If the frame is in good condition ie. No cracks
The bike is probably worth around $400 tops.
It would probably cost around $1200 to $1500 put the bike back as original.
One of the most expensive parts that is missing is the front light and battery can. that alone would probably cost $600
But these bikes make pretty cool rat rods as well and would be much cheaper as well.
Good luck
JKent