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Certification And Hallmarking
 

As of January 1, 2021, the new Assay Office brands enter into force.

 

 

Until December 31, 2020, the following Legal Marks of the Portuguese Assay Offices were in force.

 
 
LEGAL BRANDS OF CONTRACTS OVER TIME


— 1887 to 1937 —

See here

— 1938 —

See here

— 1985 —

See here

— 1998 —

See here

 

Economic Operator Data

Name: Equação do Tempo Lda
NIPC: 507 944 097
Activity Title Number: T3312

 

The buyer, in case of doubt about the authenticity of the marks, can use, for verification purposes, the services of the contrast offices.

 

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