The box with the yellow label is the voltage regulator, the first picture is the ht coil for the spark plug. The other 2 EBay pictures are both suitable replacements for the ht coil. In my experience with a bike as old as yours it is best to replace the following items
1) Ht coil
once these are fitted and the points gap set you should have a spark unless there is a wiring issue. The ignition switch may need testing to see if voltage goes through it.
hope this helps