For the series: green lovers...

By Lorenzo Cecconi; posted July 7, 2014

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This photo shows three different types of Delta insulator for MV, traded at the International Meeting in Cervia last June. The left one is Swedish, manufactured by Rörstrand in the '20s. The others specimens instead, are Germans of the '20s too. Thanks to my friends Fredrik Höjefält and František Daněk.

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