Who created "The Stockbridge Cup"?

The Stockbridge Cup was created by Hancock and Co., London, England|Henry Hugh Armstead in 1870.

What medium is "The Stockbridge Cup"?

The Stockbridge Cup is Silver, parcel gilt.

Yes, The Stockbridge Cup is in the public domain and available for free download under CC0 license.

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Hancock and Co., London, England|Henry Hugh Armstead, 1870