Introduction
The commemorative 100 Escudos coin issued by Portugal in 1989, dedicated to Madeira and Porto Santo, is part of the 2nd Series — “The Conquest of the Atlantic” (Discoveries Series). It is a popular piece among collectors of modern Portuguese coins: attractive for its historical theme and relatively easy to find on the market.
Description and Technical Details
- Year: 1989
- Face value: 100 Escudos
- Series / Theme: 2nd Series of the Portuguese Discoveries — Madeira / Porto Santo
- Metal: Cupronickel (copper–nickel alloy)
- Diameter: 34 mm
- Weight: approx. 16.5–16.6 g
- Thickness: ~2.8 mm (minor variations across sources)
- Edge: reeded
- Die alignment: coin alignment
- Catalogue reference: KM#647
Obverse and Reverse (Design Details)
- Obverse: features the inscription “REPÚBLICA PORTUGUESA,” the national shield alongside the Cross of the Order of Christ, and the value “100 ESCUDOS” at the bottom — a typical composition of Portuguese commemorative coins from that period.
- Reverse: depicts a sailing caravel on waves, with the inscription “AVE MARIA” on the sail, the island of Madeira below and Porto Santo to the side. The surrounding legend refers to the historic dates of the islands’ discoveries, along with “MADEIRA — PORTO SANTO.” Mint marks and designers’ initials appear in the exergue.
Mintage and Variants
Several sources indicate a high mintage, around 2,000,000 pieces, making it a fairly common coin in collections and on the numismatic market. No widely recognized rare variants are known, aside from separately issued proof or special-quality specimens.
Numismatic Value (Current Market Guidance)
Values depend heavily on condition (grades from Poor to Uncirculated/Proof):
- Circulated common pieces: generally under €1 to €5, often sold in bulk or low-value lots.
- Well-preserved specimens (Very Fine to Almost Uncirculated): typically €2–€10, depending on availability and presentation.
- Uncirculated or Proof quality: may reach €12 or more with certain dealers, though prices vary based on demand and condition.
Note: These are approximate ranges. Actual sale prices depend on factors such as presentation (capsules, certificates), market trends and sales platform.
Tips for Collectors and Sellers
- Assess condition carefully: marks, scratches, or cleaning can significantly reduce value. Good photos help with pricing.
- Look for proof issues or original packaging: commemorative sets or official Mint packaging increase interest.
- Check catalogue references: KM (Krause/Mishler), Numista and auction houses help confirm details and mintage. KM#647 is the standard reference for this coin.
- Watch for misleading listings: some sources incorrectly mention silver versions—regular circulation issues are cupronickel. If a silver piece is claimed, request certification.
Conclusion
The 100 Escudos — Madeira/Porto Santo (1989) coin is a representative example of late 20th-century Portuguese commemorative minting: appealing design, historical relevance, and a mintage that makes it accessible. For collectors, it fits well into themes such as Discoveries and Portuguese islands. Except for high-grade or proof pieces, its current numismatic value is modest — more collectible for interest than investment. For accurate pricing before buying or selling, it is advisable to check recent listings or consult a numismatic dealer.
