Are these British hallmarks on this snuff box?

[Adam.NYC]

These marks seem "somewhat" British, but I am not rushing to judgment. There is something unusual about them. Any ideas?

[Adam.NYC]

Thanks so much! I really appreciate it!

[blakstone]

Not Schleissner but Gebrüder Dingeldein, founded 1870 and still active in the 1930s. (Two of the founder's grandsons moved to America, where both became prominent silversmiths: Otto Dingeldein of St. Louis and later Cape Girardeau, MO, and Karl Dingeldein of New Orleans.) I think your piece is a little later - around 1910 - but certainly turn of the 19th/20th century is a reasonable timeframe.

Hope this helps!

[Adam.NYC]

This information is invaluable! How wonderful of you to help me! Thanks!

Adam