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Cuckoo weight (Sikes hydrometer, serial 4884)

Weight for Clarke hydrometer

Cuckoo weights (12, proof, "U", serial 11036)

Weights for Clarke hydrometer

Cuckoo weights (6, "B", serial 11036 or none)

Weights for Clarke hydrometer

Cuckoo weights (11, "O", serial 11036)

Weights for Clarke hydrometer

Cuckoo weights (4, "1 in n" series)

Weights for Clarke hydrometer

1840-1920
Cuckoo weights (4, proof and "1 to n" series)

Weights for Clarke hydrometer

1840-1920