Weiß jemand, welche Währung ist?

D. Afonso V claramente por causa das ondas.

ChatGPT

Thank you for sharing the images. Based on the design details and your date range (1300–1800), this coin appears to be a Portuguese copper ceitil (plural: ceitis), a low-denomination coin used in Portugal during the late medieval to early modern period.

Key Identifying Features:

Obverse (first image):

Shows what appears to be a castle with three towers, often associated with Kingdom of Portugal coins from the late medieval period.

The castle over water (wavy lines) was a common motif, representing Lisbon or maritime power.

Reverse (second image):

Displays the Portuguese coat of arms (a shield with five smaller shields forming a cross, each with bezants/dots).

This shield was standardized during the reign of King João I (1385–1433) and was used throughout the 15th–18th centuries with slight variations.

Likely Type:

Portuguese Ceitil

Material: Copper or billon (base metal with small silver content)

Date range: Most likely minted between 1385 and 1580

Monarchs: Common under João I, Afonso V, João II, and Manuel I

Additional Notes:

These coins were widely circulated and often struck crudely, which explains the irregular shape and low relief.

The imagery you have (castle and shield) was standard across multiple reigns but can help narrow it further if any legible lettering remains (though it’s heavily worn here).