Need help to id mark

[niceguy1]

HI

This is supposed to be Irish but i can't figure it out.

[dognose]

Hi,

Not Irish, but London Britannia silver marks for 1919.

Robert Frederick Fox of C.T. & G. Fox.

Trev.

[AG2012]

Hi,
London, Britannia standard and "lion head erased"with maker`s mark RFF of Robert Frederick Fox.Date letter ``d`` for 1919.

Regards

[niceguy1]

Thank you both.