Most visitors online was 1660 , on 12 Dec 2020
Thank you Jerry!I am afraid that I do not have any notes on Marsh movement protectors or movements from the serial number lists, but these are intriguing watches that did not seem to be part of the Waltham line for very many years. I found them listed in catalogs from 1916 and 1917.
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I found it curious that, for a movement protector designed for thin gold cases, they also offered them in gold-filled cases.
Here is one of the Riverside models mentioned in the catalog ad.
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