Spitfire propeller ID

My Outlaws have had part of a Spitfire prop blade for many years and would like to learn more about it.

Can anyone help with identification please and maybe some history behind it?

The numbers on it can be seen in the pic below but if not there then they are:

RA.10379RTS in yellow

046016

058397

059077

230276

232968

All of which are black in a white solid filled circle, followed by “Prop No 50613” in yellow and below that a yellow number 2 in a broken yellow ring.

Any and all info greatly appreciated.