File:Vintage Zenith Royal Miniature Vacuum Tube Hearing Aid, Model 75E, Made in the USA, "The Royalty of Hearing" (8534475659).jpg

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Pictured is a Zenith Miniature 75E vacuum tube vintage hearing aid. The Hearing Aid Division of the Zenith Radio Corporation of Chicago, IL beginning in July 1949 manufactured the Zenith Miniature 75 vacuum tube hearing aid. Research has shown that there is no difference between the 75 and 75E while later model 75E cases were frosted. This appears to be the only difference associated with the 75E which was probably just a marketing device.

The case is a gold-colored anodized aluminum. The Zenith Miniature 75E measures 4" by 2½" by ⅞" thick, and weighes 6 oz. with the batteries.

The Zenith Miniature 75 and 5E used three vacuum tubes. The microphone grill was set behind the Zenith crest and Zenith used a clever marketing slogan called the "royalty of hearing". This slogan is printed on the back of the hearing instruments. This instrument took a 22½ volt "B" battery, Zenith Z-225 or equivalent such as the Eveready 412E and a 1½ volt "A" battery Zenith Z-IPL .
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Source Vintage Zenith Royal Miniature Vacuum Tube Hearing Aid, Model 75E, Made in the USA, "The Royalty of Hearing"
Author Joe Haupt from USA

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This image was originally posted to Flickr by France1978 at https://www.flickr.com/photos/51764518@N02/8534475659. It was reviewed on 22 September 2014 by FlickreviewR and was confirmed to be licensed under the terms of the cc-by-sa-2.0.

22 September 2014

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current00:57, 22 September 2014Thumbnail for version as of 00:57, 22 September 20144,481 × 3,224 (3.27 MB)Tm (talk | contribs)Transferred from Flickr via Flickr2commons

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