EPNS maker please?

Sorry for in a hurry photos.

Really nice heavy EPNS ice bucket with insert and tongs, but I can't find the maker. Looks like a sort of stylised MS or SM in a triangle. Help!

 

Nnnnn- ice bucket !!!

any mark on the tongs......is it a pair...

 

Lovely ice bucket. I haven't had any luck finding the maker either. Barker-Ellis had at one time a S over M but inside a shield mark - not anything like this one.
http://www.silvercollection.it/electroplatesilverB.html#BARKER

I did find a teapot with the same mark. Of course the seller didn't know the maker.
http://www.ebay.ie/itm/391542564842?clk_rvr_id=1136026571542&rmvSB=true&ul_ref=http%3A%2F%2Frover.ebay.com%2Frover%2F1%2F5282-53468-19255-0%2F1%3Ficep_ff3%3D2%26pub%3D5574735181%26toolid%3D10001%26campid%3D5336086427%26icep_item%3D391542564842%26ipn%3Dpsmain%26icep_vectorid%3D229543%26kwid%3D902099%26mtid%3D824%26kw%3Dlg%26srcrot%3D5282-53468-19255-0%26rvr_id%3D1136026571542&ul_noapp=true

And a coffee pot:
http://www.ebay.co.uk/itm/391636556880?clk_rvr_id=1136053830060&rmvSB=true&ul_ref=http%3A%2F%2Frover.ebay.com%2Frover%2F1%2F710-53481-19255-0%2F1%3Ficep_ff3%3D2%26pub%3D5574735181%26toolid%3D10001%26campid%3D5336086427%26icep_item%3D391636556880%26ipn%3Dpsmain%26icep_vectorid%3D229508%26kwid%3D902099%26mtid%3D824%26kw%3Dlg%26srcrot%3D710-53481-19255-0%26rvr_id%3D1136053830060&ul_noapp=true

--- Susan

 

Thanks both! No marks on the tongs at all.

Susan, those do look similar in style as well as mark. Given they're on the UK and Irish sites, I'd think they came from this side of the pond, but the mark isn't in any book. MAddening!