AOC cap badges

[sapper533]

Hi folks,

A bit of help please, I've just been reorganising my RAOC bits and pieces, In fact I've started a new album so please have a look and advise if any errors.

But my question is about the following 1907 pattern cap badges.

The top one is a standard gm OR's cap badge with slider which I've had for years.

The other three are a bit odd.
The first one on the second row has a gilt type finish with lugs but isn't a heavy gilt front and back as I would expect on a nice old officers badge.

Next is a gm type cap badge but has a very dull almost bronze finish to the front, I have seen other ranks bronzed RE WW1 cap badges and wondered if this was something like that?

Lastly we have a gm ORs badge but with a long slider?

Any help would be appreciated
Cheers
Sean