Date & Handle Material? Joseph Rodgers table knife

Looking for information on this night. It is a Victorian Regency stamp, and no address is listed. Also unsure what this handle is made of? Thanks in advance for any observations!

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Other than the VR surely standing for Victoria Reginae (Queen Victoria), I’m not familiar with the rest of it or that maker. But, I imagine a search online will find you a bit more info. I don’t think it’s silver, unless it’s silver plate that’s been worn off.