Coin Valuation Coin| Approx. Face Value (USD)| Approx. Metal Value (USD)| Difference Guatemala 1 Centavo — Aluminum| $0.0001| $0.0019| +$0.0018 Guatemala 5 Centavos — Stainless Steel| $0.0006| $0.0007| +$0.0001 Guatemala 10 Centavos — Stainless Steel| $0.0013| $0.0012| −$0.0001 Guatemala 10 Centavos — Stainless Steel| $0.0013| $0.0012| −$0.0001 Guatemala 25 Centavos — Stainless Steel| $0.0032| $0.0022| −$0.0010 Mexico 20 Centavos — Aluminum-Bronze| $0.0010| $0.0106| +$0.0096 Canada 25 Cents — Nickel-Plated Steel| $0.18| $0.0023| −$0.1777 Total| $0.1875| $0.0201| −$0.1674 Face-value conversions are approximate USD equivalents based on GTQ, MXN and CAD exchange rates for August 2026. Composition and Calculation Guatemala 1 Centavo - Mass: approximately 0.8 g - Composition: approximately 98.5% aluminum - Aluminum content: approximately 0.788 g - Calculation: 0.788 g × $0.0024/g - Estimated metal value: $0.0019 Guatemala 5 Centavos - Mass: approximately 1.3 g - Material: stainless steel - Approximate composition used: 81% iron, 17% chromium - Iron: approximately 1.053 g - Chromium: approximately 0.221 g - Calculation: (1.053 g × $0.0005/g) + (0.221 g × $0.0007/g) - Estimated metal value: $0.0007 Guatemala 10 Centavos - Mass: approximately 2.4 g - Material: stainless steel - Approximate composition used: 81% iron, 17% chromium - Iron: approximately 1.944 g - Chromium: approximately 0.408 g - Calculation: (1.944 g × $0.0005/g) + (0.408 g × $0.0007/g) - Estimated metal value: $0.0012 Guatemala 25 Centavos - Mass: approximately 4.2 g - Material: stainless steel - Approximate composition used: 81% iron, 17% chromium - Iron: approximately 3.402 g - Chromium: approximately 0.714 g - Calculation: (3.402 g × $0.0005/g) + (0.714 g × $0.0007/g) - Estimated metal value: $0.0022 Mexico 20 Centavos - Mass: approximately 3.04 g - Material: aluminum-bronze - Approximate composition used: 92% copper, 8% aluminum - Copper: approximately 2.80 g - Aluminum: approximately 0.24 g - Pure-metal calculation: approximately $0.0185 - Scrap estimate: 3.04 g × approximately $0.0035/g - Estimated scrap-metal value: $0.0106 Canada 25 Cents - Mass: approximately 4.4 g - Material: nickel-plated steel - Approximate composition used: 94% steel, 3.8% copper, 2.2% nickel - Steel/iron: approximately 4.136 g - Copper: approximately 0.167 g - Nickel: approximately 0.097 g - Calculation: (4.136 g × $0.0005/g) + (0.167 g × $0.0064/g) + (0.097 g × $0.015/g) - Estimated metal value: $0.0023 Aggregate Result - Seven coins represented: $0.1875 approximate face value - Estimated aggregate metal value: $0.0201 - Difference: $0.1674 - The Guatemala 1 Centavo and Mexico 20 Centavos produce estimated metal values above their stated USD-equivalent face values under the assumptions used. - Actual recoverable scrap value depends on alloy composition, coin condition, separation requirements, metal recovery, buyer classification and the applicable scrap-metal price. - Coin composition varies by denomination and issue period; the exact year and issue of each coin are required for a definitive composition determination.