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Horological Meandering

Some more information on these stamps or hallmarks used in Portugal

 

can be found and was published on the IWC collectors forum and these hallmarks were already used from 1938 onwards on all imported watches. 

`Importing the Ref 325s into Portugal Watches imported into Portugal from 1938 to 1985 were stamped with a distinctive hallmark (marca de contraste or just c ontraste) depending on the case metal. The law regulating the hallmarks actually dates from 1932 but it was only fully implemented in 1938. These hallmarks were applied manually , via a stamp (punção), during the impor-t ation process, at one of the regional Assay Offices (Con-t rastarias), which operated at the National Mint` 

written by Antonio Gomes for the IWC forum , http://www.iwcforum.com/IWC.pdf 

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