Whose logo is this?

By Philip Franco; posted April 30, 2015

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I have been looking all over the web and through books and catalogs but to no avail... Can anyone help identify the manufacturer that used this logo? It is on a station post insulator that is 10 inches high and has four skirts. In the industry it is referred to as a TR-205. Thanks! Update 5/8/15. This may be the logo of the Spanish manufacturer NALDA S.A.