Help to identify hallmarks

[IMGL]

Hi, 

I'm currently running an inventory for my deceased grandmothers estate, and was looking for some guidance on a enclave that I believe to be a norman grant design. I was therefore wondering if someone would so kind as to to assist me in confirming what the hallmarks mean i.e. date, makers mark, country of origin etc. I've attached a few photos for reference. 

Kindest regards

IMGL

[sixgun]

i wonder if this is an Edinburgh assay mark from 1979

[IMGL]

Thanks sixgun - that's really helpful. 

[sixgun]

i put the wrong year - i meant to put 1979 (not 1997)

[sixgun]

The maker's mark at a squint could just be this - a 1979 year date would fit with this chap who is noted to have been making the sort of piece you have - i'm wondering if this is part of a brooch.

Mark	Maker	Dates seen	Seen on	Comments
	Alastair Norman Grant	1970..1982	Box, brooch, thimble

[IMGL]

Ah excellent. This ties in with some of what we know about my grand mothers pieces of jewlery. Just want 100% sure. Thank you so much, you've been extremely helpful.