The bit with the gears

There are four gears which I guess are the final drive gears.  They are held in by a large circlip which is easily removed.

These are the three gears that I have photos of

Going to have to get more photos as i seem to have not taken photos of the of all four gears and both side.

I'll also need to know which way round the gears go, there is also a spacer which I believe must be the neutral bit of the change.

The outer gear has 57 teeth and marked with a vespa and I think serial number (8349difficut to read) 48349.
The next gear has 52 teeth and a vespa stamp and a serial number (9007 difficult to read) 69007
The next gear has 48 teeth and no markings or serial number.
The smallest cog has 42 teeth and the only marking is 150.


All the teeth seem to be in good condition and no burr marks, I think that the gears are in great condition and can be reused with out any problems.