Help identifying unknown marks on a shell bracelet please

[siskin]

Hi. I have a solid sterling silver bracelet, marked '925' in six places, with a tiny set of four marks/hallmarks that I can't identify.

From left to right they are

1 'nt' in a square/rectangle
2 '925' in an oval
3 what looks like a circle with a cross through it in an oval
4 what looks like an o or a u with an open top, in a square. I wonder whether it might be a Hebrew letter?

Sorry the photos are so bad - they are absolutely tiny and I don't have a very good camera. (Each shell is 14 mm across).

Any help in identifying these would be really gratefully received. Thank you.

[dognose]

Hi Siskin,

The bracelet bears the London import mark (3) for 1969 (4).

I don't recognise the importer/sponsor mark (1). Is it 'NT' for sure?

Trev.

[siskin]

Hi Trev

Sorry for my tardy reply. The letters are definitely 'nt', in lower case letters. I'm getting a Scandinavian vibe off the bracelet, but could well be way off the mark!

Cheers

Siskin