Need help identifying maker's mark

[Reneepotgieter]

I have trouble identifying the name of the maker on a silver photo frame, date looks like 1859, Birmingham. 4 letters, first top left looks like either a capital S or B, followed by a capital P, then left bottom a capital D followed by either capital O or Q. Can anyone help me please, as I am fairly new to this?
Renee

[oel]

Hi Renee,

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Oel.