A fabulous sterling silver tea caddy, or cube shape box by 
Tiffany & Co. 
Weighs: 12.47 troy ozs.
Marked:  Tiffany & Co, STERLING, Porto, Portugal
Measurements: 4 inches in Height, 3 1/4" in Width,  2 3/4" in Depth
Monograms: Yes, on the lid

This exemplifies the exceptional quality of silver that contributed to maintaining Tiffany's reputation as one of the foremost luxury retailers globally. Despite its simple and timeless design, this piece is crafted from exceptionally thick silver, sparing no expense in the production process. The lid's impeccable seal is crucial, originally designed as a tea caddy to preserve freshness, underscoring the meticulousness and quality in its manufacturing.

Crafted in Tiffany & Co.'s Portuguese workshop, renowned for producing silver of the highest caliber, this piece is no exception. As previously mentioned, it boasts a robust construction from thick gauge silver, and precise lines.The base is stamped with 'Tiffany & Co.', 'sterling', 'Portugal', and the Eagle 916 mark denoting the city Porto. This exquisite caddy dates back to the 1970s.

For additional details on Tiffany & Co. Portugal sterling silver, you can visit the following websites: https://www.silvercollection.it/DICTIONARYEUHALLMARKPORTUGAL.HTML or conduct a search at https://www.1stdibs.com/furniture/dining-entertaining/sterling-silver/vintage-tiffany-co-portugal-sterling-silver-bee-hive-honey-pot/id-f_12291531/.