Unusual Bangle Help

Have this silver bangle that has what I think are CZ stones and Marcasite and has an unusual hallmark.I have asked before but didn’t show the piece I was referring to.Hopefully this might help to identify makers.

 

Is that the only marking? Is there a marking for gold / silver?

The looks so familiar to me, but I don't have anything in my little list of marks. Could the symbol on the left be an Omega symbol? It doesn't really look like it juts out enough at the bottom to be an Omega, but maybe it's worn down a bit.

 

There is a previous thread on this item.

https://www.antiquers.com/threads/makers-marks.73545/

 

Yes as stated in the opening post I have asked before but if you read my post I’m asking again and showing the bangle not just the hallmarks.

 

Don’t think it’s an Omega more like a C letter , really has me stumped as I just picked up some Jensen and Gucci silver which are easy to recognise.