Webster Signature Database - Suggest Correction

Signature Maker Instruments Comments Location References
DIAS, JOAO Portugal, fl.1614-38, Joa~o Dias; thought to be the maker who signed mariner's astrolabes as "Y°. Dyas", which see; astrolabes dated 1614, 1619, and 1628; listed as astrolabe maker and examiner of Agostinhode Goes in 1630. Lisbon? A. Stimson 3.

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