1st Armoured Motor Battery

[bigpiers]

This might not truely fit within this section of the forum, so apologies to the mods.

My father has been looking for a badge of the 1st Armoured Motor Battery for many years. He was offered one about 20 years ago for £80, but turned it down as he felt it was too much at the time (I think he had already hit his budget on that particular trip!!).

Does anyone know;
how rare they are? I haven't seen any in the recent Wallis&Wallis or Bosley/Marlow auctions.

rough price for a good quality original?

if anyone reliable has a good example on offer?