I have recently purchased a sterling silver Victorian Mizpah engraved brooch which i am having difficulties authenticating via the hallmarks. The seller believes it to be SYdenham Brothers dated 1898. Through my own internet research I am not convinced. The Hallmark for the company name is missing the S from S.BROS (this may be because it is such a small item) but the year letter is O and that does not tally with 1898, more like 1888 or 1913 (I hope its the former as the shape of the O is angular). However there is no duty (queens head) mark. If you have any ideas please let me know. Lastly if anyone can identify the flowers on it that would be a bonus!!
Thank you in advance.