Spanish 100 Pesetas Aluminum-Bronze Coin (Bicentenary of Constitution by Cadiz)
Coin/Bullion (Numismatic Currency) · Royal Mint of Spain (Fábrica Nacional de Moneda y Timbre - Real Casa de la Moneda), the official national mint of Spain established in 1893.
Pattern: Spanish Peseta Series (Juan Carlos I), specifically the commemorative or standard circulating 100 PTAS issue.
Type
Coin/Bullion (Numismatic Currency)
Maker
Royal Mint of Spain (Fábrica Nacional de Moneda y Timbre - Real Casa de la Moneda), the official national mint of Spain established in 1893.
Material
Aluminum-Bronze (92% Copper, 6% Aluminum, 2% Nickel). Note: This item contains no actual silver despite its metallic appearance in certain lighting.
Dimensions
Diameter: 24.5 mm; Thickness: 2.9 mm; Weight: 9.35 grams.
Description
A robust, gold-toned Spanish circulation coin featuring the iconic neoclassical facade of the Spanish Parliament. The '100 PTAS' text is prominently struck in a sans-serif font alongside the traditional Madrid mint mark.
Key Features
Crowned M mint mark; large 100 PTAS denomination; high-relief architectural detail of the Palacio de las Cortes.
Material & Composition
Aluminum-Bronze (92% Copper, 6% Aluminum, 2% Nickel). Note: This item contains no actual silver despite its metallic appearance in certain lighting.
Finish & Decoration
Business strike with relief engraving; features the facade of the Palacio de las Cortes (Spanish Congress of Deputies Building) on the reverse.
Hallmarks & Stamps
Crown over 'M' (Mint mark of the Madrid Mint); '100 PTAS' denomination stamp.
Construction Details
Machine-struck/Die-struck coinage; solid planchet production with a reeded edge for security.
Functional Features
Monetary currency; reeded edge to prevent clipping and assist visually impaired users.
Handle & Grip Details
N/A; circular coin form intended for handheld transaction.
Craftsmanship Details
Mass-produced industrial quality; features precise mechanical engraving but lacks the hand-wrought characteristics of artisan silver hollowware.
Authentication Indicators
Die-struck crispness in the lettering; consistent weight for the 24.5mm planchet; correct alignment of the 'M' mint mark.
Origin & Manufacturing
Madrid, Spain; manufactured by the FNMT using high-speed industrial coin presses.
Era & Period
Modern Spain (Transition to Democracy period); Kingdom of Juan Carlos I (1975–2014).
Age Estimate
Circa 1982-2001 (based on the series; the specific date is found on the obverse side not shown).
Cultural Significance
A symbol of Spanish economic life prior to the adoption of the Euro in 2002; represents the constitutional stability of the Spanish Parliament.
Condition Notes
Circulated (Very Fine to Extremely Fine); visible surface abrasions (bag marks), light oxidation consistent with aluminum-bronze, and softening of the higher points of the relief.
Value Estimate
$1.00 - $3.00 USD. Value is primarily numismatic interest for collectors rather than precious metal content.
Care & Maintenance
Do not polish with silver cream as it is not silver. Store in a dry environment to prevent bronze disease; use PVC-free coin flips for long-term preservation.
Similar Pieces
1966 Silver 100 Pesetas (contains 80% silver, much larger); 500 Pesetas coin (bimetallic); current Spanish 1 Euro coin (similar size but different color profile).
Interesting Facts
The 100 Peseta coin was affectionately nicknamed '20 duros' in Spain. This specific size and color replaced the larger silver-colored cupro-nickel versions in 1982.