R A B ? button ID please

[RBJ MIlitaria]

Hi can some kind member ID this brass button Firmin London on reverse
Thanks

[btns]

The letters are R.N.B.
A lot of people have guessed these letters, but without giving evidence.

[RBJ MIlitaria]

Originally Posted by btns

The letters are R.N.B.
A lot of people have guessed these letters, but without giving evidence.

Thanks for the info,
I am sure it is military came with a lot of RAOC insignia but none the wiser !