This is a black metal holdfast, it consists of a rigid bar anchored to a wooden frame. At one end off the bar there is a wide mouthed bowl full of sharp pointed metal teeth. At the other end of the bar there is a spring operated lever, with the words "Oyster Holdfast, Bowlings Pat. Ltd, London" branded on it. This lever has a metal handle under which are more metal teeth. The idea being to put the oyster in the bowl and then push the lever down to hold the oyster fast between the metal teeth. Approximate date 1930.
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