Rare memo made out to G M Whipple at Kew Observatory, 1889
Concerns the anomaly of duplicate watch numbers! Weil & Harburg, now little known, were 'Watch Manufacturers & Importers of Musical Boxes' with premises also at rue Leopold Robert, Chaux de Fonds, Switzerland. 20 x 13 cm.
Punched for filing, otherwise in good clean condition.
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