What Machine Gun Corps Badge Do I Need?

[Shiny]

Hi All,

I have a relative who was a Cpl Instructor in the Tank Corps during WW1.

I've managed to get his record and it shows he started in the RFA(T) before being transferred into the Machine Gun Corps on the 11th Aug 1917.

In Jan 1918 he was made a Tank Instructor before being commissioned into the Tank Corps.

So with all that in mind can anyone show me what Machine Gun Corps cap badge I should be looking for please?

Thanks a lot,

Michael