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RS-001
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Atrás, izquierda, relevador modelo C de correo británico, no polarizado, con bobinado diferencial, marcado “B.I. & H. Co. Ltd. Liverpool”.
Atrás, derecha, relevador modelo B del correo británico, polarizado, con bobinado diferencial, fabricante desconocido.
Adelante, izquierda, relevador modelo A del correo británico, polarizado, con bobinado diferencial, fabricante desconocido.
Adelante, derecha, relevador polarizado, con bobinado diferencial, fabricado por Walters Co. Ltd. de Londres.
At the back, left, British Post Office relay model C, non polarized, differentially wound, manufactured by B.I. & H. Co. Ltd. Liverpool.
At the back, right, British Post Office relay model B, polarized, differentially wound, maker unknown.
At the front, left, British Post Office relay model A, polarized, differentially wound, maker unknown.
At the front, right, polarized, differentially wound relay, manufactured by Walters Co. London.
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