Help with Irish sponsor mark on bangle and age?

1

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

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2

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

3

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.

Phil

4

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