Help with Irish sponsor mark on bangle and age?

Hi guys can someone help me with this sponsor mark and ageing my Irish silver bangle?

1975 . Sorry i can’t help with maker’s mark.

I have seen this mark before, earliest date 1968 and latest 1978, always on bangles/bracelets, but have not been able to identify the sponsor. I agree with Roy on the date.


Thanks guys appreciate it. I’ll keep digging for sponsors mark.
Regards T