57A shroud ... vass is?

By http://www.telephonecollectors.org/pictures/aul McFadden, ; posted March 23, 2011; hits 1141


A W/E 57A dial "shroud" with a #6 E3 , 3-69 dial plus a "ring" that mounts around the top of the dial. What is this arrangement for ... switchboard of some kind??

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