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KG-003

KG-003

At  the left, key used on very long circuits manufactured by Siemens

At the right a similar key, unmarked, showing the upper part of the arm pivoted so as to close a contact to discharge the line, not shown.

The first is believed to belong originally to The River Plate Telegraph Co. in Uruguay, so it could have been used in the Colonia – Punta Lara cable.