Silver chinese export ring maker mark.

[bread_baby]

Silver filigree ring set with bone that is engraved with the image of a phoenix. On the back are the marks 'china', 'sterling', and a maker marks with chinese characters. see Photo.

Does anyone recognize or can read the maker mark and when were these made?

I came across these makers. they look similar but not 100%:
LEO (Canton) Circa 1840- 1880
Yung Lei (Shanghai) Circa 1880-1915

Pictures:

[bread_baby]

On a language forum a user said it means "silver", so no makers mark.

google translate: https://translate.google.com/?hl=en&tab=wT#view=home&op=translate&sl=zh-CN&tl=en&text=%E7%BA%B9%E9%93%B6